24/7 Phone Services 0086(371)86&15&18&27
Send to E-mail [email protected]
[email protected] Development Zone, Zhengzhou, China

on the microstructure and fracture surface of bainite in

on the microstructure and fracture surface of bainite in

on the microstructure and fracture surface of bainite in

Tel: 0086(371)86&15&18&27

Mail: [email protected]

On the Microstructure and Fracture Surface of Bainite in ...The microstructure and fracture surface of bainite in JIS SK5 steel have been investigated using transmission electron microscopy (TEM) and electron back-scatter diffraction (EBSD) in this study.

What is the structure of bainite?

This lower bainite structure is somewhat similar to lightly tempered martensite. Bainite occupies a region between these two process in a temperature range where iron self-diffusion is limited but there is insufficient driving force to form martensite.See all results for this questionWhat are the effects of microstructure on temper toughness?The effect of microstructure on the impact toughness and the temper embrittlement of a SA508Gr.4N steel was investigated. Martensitic and bainitic structures formed in this material were examined via scanning electron microscopy, electron backscatter diffraction, transmission electron microscopy, and Auger electron spectroscopy (AES) analysis.See all results for this questionToughness of tempered upper and lower bainitic on the microstructure and fracture surface of bainite inThe fracture surfaces from impact specimens having a lower bainitic microstructure were characterized by quasicleavage fracture, whereas those having an upper bainitic microstructure exhibited only cleavage fracture. The quasicleavage facet size and cleavage facet size correlate with bainite packet size and bainite block size.

Toughness of tempered upper and lower bainitic on the microstructure and fracture surface of bainite in

bainite in a 4150 steel have been studied. The results correlate with quantitative measurements taken from both the fracture surfaces and the microstructures of Charpy test specimens. The fracture surfaces from impact specimens having a lower bainitic microstructure were characterized by quasicleavage frac-The Role of Bainite in Wear and Friction Behavior of on the microstructure and fracture surface of bainite inOnce the crack is formed, its rapid propagation will lead to a fatigue stratified fracture of the surface microstructure. As Figure 6 shows, after wearing at loads of 100 N, both the dislocation density and micro-hardness of ADI1 exceeded that of ADI2. Thus, the fracture strength of worn surface microstructure of ADI1 was higher than that of ADI2.Cited by: 7Publish Year: 2019Author: Fulin Wen, Jianhua Zhao, Dengzhi Zheng, Ke He, Wei Ye, Shen Qu, Jingjing ShangguanThe Influence of Abnormal Segregation Band on Mechanical on the microstructure and fracture surface of bainite inThe microcracks are inclined to form and extend in the bainite, or boundaries between bainite and matrix, which eventually lead to separation of the fracture, that is the laminated fracture. Studies have found that the ferrite in the abnormal segregation band region exists a certain degree of mixed grain due to chemical composition segregation [19] and improper control of production technology [20] .Cited by: 1Publish Year: 2018Author: Rui Feng, Benkui Gong, Hongwei Cui, Yaokun Pan, Jiahui Bao

StructurePropertyFracture Mechanism Correlation in Heat on the microstructure and fracture surface of bainite in

Jan 13, 2015 · The microstructure of the ICCGHAZ consisted of granular bainite and upper bainite with necklace-type MA constituent distributing along prior austenite grain boundaries. And the ICCGHAZ region played a dominant role in influencing the fracture behavior and impact energy.Cited by: 18Publish Year: 2015Author: Xueda Li, Xiaoping Ma, S. V. Subramanian, R. D. K. Misra, Chengjia ShangRelationships Between Fatigue Strength and Microstructure on the microstructure and fracture surface of bainite inSynopsis. Relationships between fatigue strength and microstructure were investigated by means of isothemal quenching and tempering to obtain mix-structures consisting of ferrite + martensite or ferrite + pearlite + martensite, granular bainite + martensite, upper bainite + martensite and lower bainite + martensite, as compared with full martensite structure.Cited by: 2Publish Year: 1987Author: Qiu Yaojian, Zheng Tiezheng, Yang RangQuantitative phase analysis of martensite-bainite steel on the microstructure and fracture surface of bainite inMay 21, 2020 · Furthermore, the deeper dimples in alloy A were coarse and large enough to be observed on the macro tensile fracture surface. In general, deeper dimples are known to be ones formed in bainitic steel. It is also known that if there is large bainite, its boundary becomes the focal point of stress and strain, which results in faster formation of on the microstructure and fracture surface of bainite inCited by: 4Publish Year: 2020Author: Min-Seok Baek, Kyu-Sik Kim, Tae-Won Park, Jinhee Ham, Kee-Ahn Lee

Quantitative phase analysis of martensite-bainite steel on the microstructure and fracture surface of bainite in

In addition, microstructure, tensile and high-cycle fatigue behaviors according to M/B phase fraction were investigated. Initial microstructural observation measured a prior austenite grain size (PAGS) of 24 m (alloy A) and 11 m (alloy B). Both alloys were observed to have martensite and bainite structures.Cited by: 4Publish Year: 2020Author: Min-Seok Baek, Kyu-Sik Kim, Tae-Won Park, Jinhee Ham, Kee-Ahn LeeOn the Microstructure and Fracture Surface of Bainite in on the microstructure and fracture surface of bainite inThe microstructure and fracture surface of bainite in JIS SK5 steel have been investigated using transmission electron microscopy (TEM) and electron back-scatter diffraction (EBSD) in this study. Specimens were austenitized at 880u0001 for 30 min and then austempered at 300u0001 and 400u0001 for 1hr, as a result, lower bainite and upper bainite were formed, respectively.Cited by: 1Publish Year: 2006Author: Meng Yin Tu, Wen Hsiung Wang, Yung Fu HsuOn the Microstructure and Fracture Surface of Bainite in on the microstructure and fracture surface of bainite inThe microstructure and fracture surface of bainite in JIS SK5 steel have been investigated using transmission electron microscopy (TEM) and electron back-scatter diffraction (EBSD) in this study.

Multiphase microstructure formation and its effect on on the microstructure and fracture surface of bainite in

Huang et al. [16,17] and Zhao et al. claimed that the toughness of medium/low-carbon and medium/high-carbon low-alloy steels can be significantly improved with an appropriate amount of lower bainite in martensite-bainite complex microstructure, although the strength can slightly decrease compared with a single martensite microstructure steel.Author: Kui Chen, Huabing Li, Zhouhua Jiang, Fubin Liu, Congpeng Kang, Xiaodong Ma, Baojun ZhaoPublish Year: 2021Microstructural characterization of Charpy-impact-tested on the microstructure and fracture surface of bainite inThe microstructure of nanostructured bainite consisted chiefly of carbide-free bainitic ferrite with retained austenite films. X-ray diffractometry (XRD) measurement indicated that no retained austenite existed in the fractured surface of the Charpy-impact-tested specimens.Investigation on LCF Behavior of Welded Joint at Different on the microstructure and fracture surface of bainite inMar 28, 2019 · The current research of low cycle fatigue (LCF) is mainly focused on the components with uniform microstructure. Compared with these typical components, LCF behavior of welded components are more complex due to their great gradient microstructure, especially for different temperature. In this paper, LCF properties were conducted on the welded joint at different temperatures for bainite steel on the microstructure and fracture surface of bainite inAuthor: Ke Xu, Xiongfei Wang, Haichao Cui, Fenggui LuPublish Year: 2019

Influence of Prior Martensite on Bainite Transformation on the microstructure and fracture surface of bainite in

A multiphase microstructure comprising of different volume fractions of prior martensite and ultra-fine bainite (bainitic ferrite and retained austenite) was obtained by quenching to certain temperatures, followed by isothermal bainitic transformation. The effect of the prior martensite transformation on the bainitic transformation behavior, microstructures, and mechanical properties were on the microstructure and fracture surface of bainite inCited by: 10Publish Year: 2019Author: Hui Guo, Xianying Feng, Aimin Zhao, Qiang Li, Jun MaIdentification of Ductile to Brittle Transition on the microstructure and fracture surface of bainite inbainite microstructure. Fracture surface observations showed good agreement for physical fracture mechanisms (cleavage facet size, mixed ductile + brittle fracture in the transition region, ductile fracture at higher temperatures) between PS and Charpy, in particular sensitivity of upper bainite toFatigue properties of X80 pipeline steels with ferrite on the microstructure and fracture surface of bainite inMar 07, 2016 · In the dual-phase microstructure, the ferrite in the ferrite/bainite pipeline steel of bainite in bainite/martensite pipeline steel as a soft phase have higher ductility, and the bainite in the ferrite/bainite pipeline steel of martensite in the bainite/martensite pipeline steel as a hard phase is strong , , . Therefore, high-strength can be combined with excellent ductility; X80 grade or X100 grade pipeline steel with excellent deformability is obtained with bainite/martensite or bainite on the microstructure and fracture surface of bainite inCited by: 50Publish Year: 2016Author: Zuo-peng Zhao, Gui-ying Qiao, Lei Tang, Hong-wei Zhu, Bo Liao, Fu-ren Xiao

FRACTURE TOUGHNESS OF PLASTIC -MOLD STEELS:

IC fracture surface). The microstructure was tempered bainite and martensite; increasing the depth from 31 to 217 mm, more tempered bainite was found, with some prior austenite grain boundary constituents appearing at the larger distance. The as-received O1 blank showed a large dependence of the microstructure upon the depth. TheEvaluation of Flash Bainite in 4130 Steelmeasured in the base material. Flash Bainite demonstrated an impressive combination of strength, elongation, ductility and toughness. Moreover, its impact toughness was consistently higher than quench and tempered plate at all test temperatures evaluated. Intergranular cracking was observed on the fracture surface of some the Flash Bainite impactEffects of microstructure on fatigue crack propagation on the microstructure and fracture surface of bainite inEffects of microstructure on fatigue crack propagation behavior of bainite steel November 2013 Cailiao Kexue yu Gongyi/Material Science and Technology 21(6):60-65

Effect of microstructure on the very high cycle fatigue on the microstructure and fracture surface of bainite in

Apr 10, 2015 · The microstructure of the U20Si-A (air cooling) and U20Si-B (oil cooling) specimens are presented in Fig. 2.The bainite and martensite can be conveniently distinguished easily through the optical micrographs obtained by etching with LePera reagent (Fig. 2a and b).The upper bainitic ferrite, lower bainitic ferrite, and martensite appear blue, brown and yellow, respectively.Cited by: 32Publish Year: 2015Author: Ping Zhao, Guhui Gao, R.D.K. Misra, Bingzhe Bai, Bingzhe BaiEffect of microstructure on the impact toughness and on the microstructure and fracture surface of bainite inJan 09, 2018 · The effect of microstructure on the impact toughness and the temper embrittlement of a SA508Gr.4N steel was investigated. Martensitic and bainitic structures formed in Cited by: 21Publish Year: 2018Author: Zhiqiang Yang, Zhengdong Liu, Xikou He, Shibin Qiao, Changsheng XieCorrelation between Microstructure/Fracture Surfaces bainite is converted to brittle martensite. Samples with bainitic microstructure presented higher impact energies than those with martensitic microstructure. This is fully con rmed by the fracture surface analysis at higher magni cation, revealing three main micromechanisms of fracture: brittle, ductile and

Cleavage fracture in high strength low alloy weld metal on the microstructure and fracture surface of bainite in

@article{osti_442990, title = {Cleavage fracture in high strength low alloy weld metal}, author = {Bose, W W and Bowen, P and Strangwood, M}, abstractNote = {The present investigation gives an evaluation of the effect of microstructure on the cleavage fracture process of High Strength Low Alloy (HSLA) multipass weld metals. With additions of alloying elements, such as Ti, Ni, Mo and Cr, the on the microstructure and fracture surface of bainite inBainite | Metallurgy for DummiesBainite is an acicular microstructure (not a phase) that forms in steels at temperatures from approximately 250-550°C (depending on alloy content). First described by E. S. Davenport and Edgar Bain, it is one of the decomposition products that may form when austenite (the face centered cubic crystal structure of iron) is cooled past a critical temperature of 727 °C (about 1340 °F).Are martensitic microstructures more susceptible to embrittlement?The results revealed that, compared with the fully bainitic microstructures, the martensitic microstructures are more susceptible to non-hardening embrittlement. Gurovich et al. 16 have reported that the critical brittleness temperature of the initial state of a VVER-100 RPV steel increases with the grain size.See all results for this question

An investigation into the influence of microstructure on on the microstructure and fracture surface of bainite in

lower bainite may affect the properties similar to martensite. The effect of microstructure on the impact properties. The absorbed impact energies of steels A and B with fer-rite-martensite microstructures are shown in fig. 5. As can be clearly seen, the absorbed impact energy in this case is too low and varies from 6 J to 10 J. In addition, these dual(PDF) Microstructure and mechanical properties of bainitic on the microstructure and fracture surface of bainite inFracture surface of tensile samples for plates A(II) (a) and A(V) (b). on the microstructure and fracture surface of bainite in obtained in low-carbon highstrength plates steels with a mixture microstructure of bainite and acicular ferrite [30 on the microstructure and fracture surface of bainite in(PDF) Investigation on LCF Behavior of Welded Joint at on the microstructure and fracture surface of bainite inWhen it came to 300 °C, more cracks appeared near to HAZ and the heterogeneous distributed surface inclusion was responsible for the fracture transition to HAZ adjacent to bainite steel rather on the microstructure and fracture surface of bainite in

(PDF) Correlation between Microstructure/Fracture Surfaces on the microstructure and fracture surface of bainite in

The present paper deals with the evaluation of the effect of different vacuum heat treatments on the microstructure and fracture surfaces of a low alloyed sintered Fe-[1.5Cr-0.2Mo]-0.6C steel, in on the microstructure and fracture surface of bainite in

Leave a message

Message information

Please describe your brand size and data volume in detail to facilitate accurate quotation

Client Image 1
Client Image 2
Client Image 3
Client Image 4
Client Image 5
Client Image 6
Client Image 7
Client Image 8
Client Image 9
Client Image 10
Client Image 11
Client Image 12