Results 31 to 40 of about 514 (117)

Recent Progress in Understanding the Nano/Micro-Mechanical Behavior of Austenite in Advanced High Strength Steels

Metals, 2021
Advanced high strength steels (AHSS) are developed to reduce vehicle weight without sacrificing passenger safety. The newly developed AHSS frequently incorporates the austenite as the intrinsic component with large amount and good stability, which is ...
Qingwen Guan, Wenjun Lu, Binbin He
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The Influence of Vanadium Additions on Isothermally Formed Bainite Microstructures in Medium Carbon Steels Containing Retained Austenite

Metals, 2020
The influence of V additions on isothermally formed bainite in medium carbon steels containing retained austenite has been investigated using in-situ high energy X-ray diffraction (HEXRD) and ex-situ electron energy loss spectroscopy (EELS) and energy ...
Irina Pushkareva, Babak Shalchi-Amirkhiz, Sébastien Yves Pierre Allain, Guillaume Geandier, Fateh Fazeli, Matthew Sztanko, Colin Scott   +6 more
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Microstructure–Property Relationships in Thermomechanically Processed Medium-Mn Steels with High Al Content

Metals, 2018
Detailed studies on microstructure⁻property relationships of thermomechanically processed medium-Mn steels with various manganese contents were carried out. Microscopic techniques of different resolution (LM, SEM, TEM) and X-Ray diffraction methods
Adam Grajcar, Andrzej Kilarski, Aleksandra Kozlowska   +2 more
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Effects of different intercritical annealing processes on microstructure and cryogenic toughness of newly designed medium-Mn and low-Ni steel

Journal of Materials Research and Technology, 2023
Through the idea of replacing Ni with Mn, a shortened process of ultra-fast cooling and two-step intercritical annealing for medium-Mn and low-Ni steel after rolling was designed.
Zhihui Liao, Ying Dong, Yu Du, Xiaonan Wang, Min Qi, Hongyan Wu, Xiuhua Gao, Linxiu Du   +7 more
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Synergistic enhancement of strength and ductility in Fe–10Mn-0.4C steel via short-time partitioning and cold rolling

Journal of Materials Research and Technology
In the conventional preparation of medium-manganese high-strength steel, hot rolling or cold rolling processes are primarily employed, interspersed with isothermal tempering to ensure the mechanical properties of the steel.
Ziwei Chen, Yan Wang, Yonghe Cai, Zhiping Xiong, Weiwei Zhu, Mingyu Li, Qihang Xiong, Guoqing Zu   +7 more
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Dramatic improvement of strain hardening and ductility to 95% in highly-deformable high-strength duplex lightweight steels

Scientific Reports, 2017
Ferrite + austenite duplex lightweight steels have been actively developed by adding low-density Al for overcoming a limitation of stiffness deterioration by a traditional approach to obtain a weight reduction.
Seok Su Sohn, Hyejin Song, Jai-Hyun Kwak, Sunghak Lee   +3 more
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Effect of Microstructure Morphology of Q&P Steel on Carbon and Manganese Partitioning and Stability of Retained Austenite

Metals, 2022
In this study, we used 0.2C-1.7Si-1.9Mn wt% cold-rolled sheet as the experimental material to prepare the Q&P sample with blocky microstructures and the QQ&P sample with lath-shaped microstructures through the Q&P and QQ&P processes, respectively.
Huan Xiao, Gang Zhao, Deming Xu, Yuanyao Cheng, Siqian Bao   +4 more
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Interpretation of dynamic tensile behavior by austenite stability in ferrite-austenite duplex lightweight steels [PDF]

Scientific Reports, 2017
AbstractPhenomena occurring in duplex lightweight steels under dynamic loading are hardly investigated, although its understanding is essentially needed in applications of automotive steels. In this study, quasi-static and dynamic tensile properties of duplex lightweight steels were investigated by focusing on how TRIP and TWIP mechanisms were varied ...
Jaeyeong Park, Min Cheol Jo, Hyeok Jae Jeong, Seok Su Sohn, Jai-Hyun Kwak, Hyoung Seop Kim, Sunghak Lee   +6 more
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Role of refined martensite microstructure and intercritical Mn partitioning on austenite reversion in Fe–5Mn-1.5Al-0.2C alloy

Journal of Materials Research and Technology
In this paper, we demonstrate a novel design to accelerate the austenite reversion of a Fe–5Mn-1.5Al-0.2C (wt.%) medium Mn steel (MMS), via a deliberating adding an elevated pre-annealing before conventional intercritical annealing.
Baojia Hu, Hailong Zhu, Shichao Liu, Chengwu Zheng, Liansheng Chen, Dianzhong Li   +5 more
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Decomposition characteristic of austenite retained in GCr15 bearing steel modified by addition of 1.3 wt.% silicon during tempering

Journal of Materials Research and Technology, 2019
The decomposition characteristic of austenite retained in a GCr15 bearing steel modified by the addition of 1.3 wt.% silicon during tempering was investigated by microstructural observation, X-ray determination, and dilatometric experiment.
Zhihui Chen, Jianfeng Gu, Lizhan Han
doaj   +1 more source