Results 21 to 30 of about 1,130 (182)

Atomic Mechanism of the Bainite Transformation [PDF]

HTM Journal of Heat Treatment and Materials, 2017
Abstract I have on previous occasions shown how we can be surprised and delighted by new discoveries in steels, which at the same time may be useful. However, my focus in this lecture is purely on some basic science so that a well-founded understanding of mechanisms can lead to ever greater advances.
openaire   +3 more sources

Continuous Cooling Transformation of Undeformed and Deformed High Strength Crack-Arrest Steel Plates for Large Container Ships

High Temperature Materials and Processes, 2019
The phase transformation behavior of crack-arrest steel during continuous cooling either with or without deformation at high temperatures was investigated.
Qi Yongfeng, Li Jing, Shi Chengbin, Zhu Qintian   +3 more
doaj   +1 more source

Thermodynamic analysis and strength-toughness research of nanobainite

工程科学学报, 2016
In view of slow phase transformation rate in high-carbon,silicon-rich and low-alloy bainite steel(nanostructured bainite steel),the effects of alloy elements on the overall kinetics of low temperature bainite phase transformation were analyzed by using ...
ZHI Chao, ZHAO Ai-min, HE Jian-guo, ZHAO Fu-qing, CHE Ying-jian   +4 more
doaj   +1 more source

Study on Continuous Cooling Phase Transition of 12Cr1MoV Pearlite Heat-resistant Steel [PDF]

Teshugang
The continuous cooling transformation of 12Cr1MoV perlitic heat-resistant steel was studied by means of thermal expansion tester， laser confocal microscope， microhardness tester and scanning electron microscope， the continuous cooling transformation （CCT）
Li Yaqiang, Li Yingying, Li Chuan, Han Baochen, Shi Jingqing   +4 more
doaj   +2 more sources

Bainite kinetic energy, activation energy, and tribological behavior of austempered AISI4340 steel

Journal of Materials Research and Technology, 2021
A study has been made of the effect of heat-treatment on the microstructures of commercial quality AISI4340 steel after austenitizing at 1128 K and austempering at temperatures ranging from 561 K to 644 K.
Xue Han, Jiayu Hou, Zhenpu Zhang, Gary C. Barber, Feng Qiu, Fang Chang, Shu-Qing Kou   +6 more
doaj   +1 more source

Achieving ultrafine martensite-bainite duplex microstructures by combining prior cold deformation with chronological control of phase transformation in GCr15 bearing steel

Journal of Materials Research and Technology
In this work, a strategy is proposed by combining prior cold deformation with chronological control of phase transformation to achieve ultrafine martensite-bainite duplex microstructures in GCr15 bearing steel, which is the specimens with 0∼45 % prior ...
Xiaohui Lu, Guanglin Yuan, Xuanhong Yan, Rushan Lu, Huajie Shi, Yinsong Chen, Dongsheng Qian, Lin Hua   +7 more
doaj   +1 more source

Kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation excluding ε-carbide precipitation in intercritical quenching and partitioning steels

Materials & Design, 2019
The kinetic models of multiple-stage martensite transformation and subsequent isothermal bainite formation were investigated in intercritical quenching and partitioning steels. The modified K-M model that considering instantaneous kinetic characteristics
Fei Peng, Yunbo Xu, Dingting Han, Xingli Gu   +3 more
doaj   +1 more source

Karl Popper and the Mechanisms of Hydrogen Embrittlement

Advanced Engineering Materials, EarlyView.
Representation of the beginning of loss of ductility rather than embrittlement. Small concentrations of hydrogen in a diffusible form within iron are well‐established to harm the mechanical integrity of steels. There are theories that attempt to explain the pernicious role of hydrogen.
H. K. D. H. Bhadeshia
wiley   +1 more source

Effect of Two-Step High Temperature Treatment on Phase Transformation and Microstructure of V-Bearing Bainitic Steel

Metals, 2022
The effects of VC precipitation on phase transformation, microstructure, and mechanical properties were studied by controlling two-step isothermal treatment, i.e., austenization followed by intercritical transformation.
Bo Lv, Dongxin Yin, Dongyun Sun, Zhinan Yang, Xiaoyan Long, Zeliang Liu   +5 more
doaj   +1 more source

Physics‐Informed Machine Learning for Sustainable Alloy Design: Toward a Recyclable Unified Q&P Steel

Advanced Science, EarlyView.
A physics‐informed property‐bridging framework links high‐throughput hardness screening to tensile performance in quenching and partitioning steels. By transferring metallurgically guided representations across properties, a single alloy composition is designed to achieve multiple strength grades through heat‐treatment tuning alone, offering a ...
Xiaolu Wei, Yong Li, Chenchong Wang, Lingyu Wang, Xiang Song, Keming Mao, Yu Zhang, Wei Xu   +7 more
wiley   +1 more source