Microstructure and properties of hot-rolled low carbon fine multiphase steels

被引：0
|
作者：
Yin, Yun-Yang [1 ,3 ]
Yang, Wang-Yue [1 ]
Li, Long-Fei [2 ]
Sun, Zu-Qing [2 ]
Wang, Xi-Tao [2 ]
机构：
[1] School of Materials Science and Engineering, University of Science and Technology Beijing, Beijing 100083, China
[2] State Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing, Beijing 100083, China
[3] Research and Development Center of Wuhan Iron and Steel (Group) Corp., Wuhan 430080, China
来源：
Cailiao Rechuli Xuebao/Transactions of Materials and Heat Treatment | 2010年 / 31卷 / 08期
关键词：
Controlled cooling - Dynamic transformation - Ferrite matrix - Fine grain - Fine microstructure - Grain size - High strength - Hot compression tests - Hot-rolled - Interlamellar spacing - Low carbon - Microstructure and mechanical properties - Microstructure and properties - Multiphase steel - Retained austenite - Simulation tests - TRIP effect - Undercooled austenite;
D O I：
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中图分类号：
学科分类号：
摘要：
The microstructure and mechanical properties of hot-rolled fine C-Mn-Si and C-Mn-Al-Si multiphase steels were investigated by hot compression tests on a simulation test machine. The results show that the microstructure consisted of a ferrite matrix with a mixture of bainite, retained austenite and pearlite is obtained in the steels by dynamic transformation of undercooled austenite and subsequently controlled cooling processing. The grain size of ferrite and colony of pearlite is refined, and the interlamellar spacing of pearlite decreases for the hot-rolled multiphase steels. Due to the fine microstructure of the multiphase steels and the TRIP effect, the investigated steels exhibit high strength and excellent elongation as well as better working hardening capacity.
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页码：54 / 60
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