Bainite transformation behavior, microstructural feature and mechanical properties of nanostructured bainitic steel subjected to ausforming with different strain

Guo, Hui; Li, Qiang; Fan, Yaping; Feng, Xianying

doi:10.1016/j.jmrt.2020.06.063

Cited by 14 publications

(2 citation statements)

References 55 publications

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“…As shown in Figure 5, all specimens show continuous yielding behaviour. The literature [37][38][39] reports that mobile dislocations formed inside the LB are promoted by the hard phase of M/A constituents, leading to continuous yielding behaviour. The fraction of bainite laths is higher in the whole heating specimen than in the local heating specimen.…”

Section: Tensile Testing Resultsmentioning

confidence: 99%

Microstructure and mechanical properties of the start bending point for X90 bend

Wang

Zhou

Cui

et al. 2023

Materials Science and Technology

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The effect of the hot induction bending process on the microstructure and mechanical properties of the start bending point for high-strength bends was investigated. Acicular ferrite (AF) is found to be absent in the microstructure of the start bending point. After whole heating process, the microstructure is composed of lath bainite (LB) and quasi-polygonal ferrite (QPF), with an impact absorbed energy of 202 J cm−2 and a strength is very similar to that of the baseline pipe. After local heating process, the impact absorbed energy is 103 J cm−2, which is lower than that of the baseline pipe. For thick-walled high-strength pipeline steel, the whole heating process is determined to be the optimum heat treatment for guaranteeing excellent strength and toughness combination.

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Section: Tensile Testing Resultsmentioning

confidence: 99%

Microstructure and mechanical properties of the start bending point for X90 bend

Wang

Zhou

Cui

et al. 2023

Materials Science and Technology

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“…Recently, related studies have shown that nanostructured bainite (NB) bearing steel has excellent strength and better toughness, which can improve the fatigue life and wear resistance of bearing steel in harsh conditions, and it has been recognized as a potential candidate for bearing applications [7,10]. Compared with martensite bearing steel, the obvious feature of NB bearing steel is that it possesses fine bainitic ferrite laths and carbon-enriched retained austenite.…”

Section: Introductionmentioning

confidence: 99%

The Microstructure Transformations and Wear Properties of Nanostructured Bainite Steel with Different Si Content

Zhou

Wang

et al. 2022

Materials

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Nanostructured bainite (NB) bearing steel has excellent strength and ductility combinations, which can improve the fatigue life and wear resistance of bearing steel in harsh conditions. However, the phase transformations and the correlation between the microstructure and wear properties of NB bearing steel are still unclear. In this study, bearing steels with different Si contents (GCr15SiMo and GCr15Si1Mo) were prepared to have nano-bainitic structures, and their microstructure transformations and wear mechanisms were investigated. The results show that the Si element can inhibit the precipitation of carbides and can then promote the block-like retained austenite formation and refine the bainitic ferrite lamellar structure. The impact energy of GCr15Si1Mo is larger than that of GCr15SiMo because the nanostructured bainite and retained austenite are the main toughness phase in these steels. The wear results indicate that the steels which possess appropriate strength and toughness are helpful for improving wear resistance properties. Finally, the wear resistance performance of the GCr15Si1Mo austempered at 210 °C and GCr15SiMo austempered at 230 °C was good in this work.

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Comparison of the Microstructures and Mechanical Properties in the Overlapping Region of Low Carbon Steel Additive Bead Fabricated by WAAM and FSP

Anshari

Mishra

Imam

et al. 2023

Metall Mater Trans A

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Bainite transformation behavior, microstructural feature and mechanical properties of nanostructured bainitic steel subjected to ausforming with different strain

Cited by 14 publications

References 55 publications

Microstructure and mechanical properties of the start bending point for X90 bend

Microstructure and mechanical properties of the start bending point for X90 bend

The Microstructure Transformations and Wear Properties of Nanostructured Bainite Steel with Different Si Content

Comparison of the Microstructures and Mechanical Properties in the Overlapping Region of Low Carbon Steel Additive Bead Fabricated by WAAM and FSP

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