Effects of ausforming strain on bainite transformation in nanostructured bainite steel

被引：19
|
作者：
Fan, Hong-liang [1 ,2 ]
Zhao, Ai-min [1 ]
Li, Qing-chun [3 ]
Guo, Hui [1 ]
He, Jian-guo [4 ]
机构：
[1] Univ Sci & Technol Beijing, Engn Res Inst, Beijing 100083, Peoples R China
[2] Beijing Inst Technol, Beijing Inst Technol Press, Beijing 100081, Peoples R China
[3] Liaoning Univ Technol, Sch Mat Sci & Engn, Liaoning 121001, Peoples R China
[4] Tsinghua Univ, Sch Mat Sci & Engn, Beijing 100084, Peoples R China
来源：
INTERNATIONAL JOURNAL OF MINERALS METALLURGY AND MATERIALS | 2017年 / 24卷 / 03期
基金：
中国国家自然科学基金;
关键词：
phase transformations; kinetics; bainite steels; nanostructured materials; ausforming; MARTENSITIC-TRANSFORMATION; MECHANICAL STABILIZATION; DEFORMED AUSTENITE; NANOBAINITE STEEL; TEMPERATURE; MICROSTRUCTURE; ALLOYS;
D O I：
10.1007/s12613-017-1404-7
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effects of ausforming strain on bainite transformation in high-carbon low-alloy nanobainite steel were investigated using a Gleeble 3500 thermomechanical simulator machine. The bainite transformation speed at 300A degrees C was found to be accelerated by ausforming at 300, 600, and 700A degrees C under applied strains ranging from 10% to 50% followed by isothermal transformation at 300A degrees C. The ausformed bainite volume fraction varied with the ausforming strain because of the mechanical stabilization of the deformed austenite. Ausforming at low temperatures not only enhanced the bainite ferrite volume fraction but also refined the microstructure substantially. Although the amount of bainite ferrite might have been reduced with increasing strain, the microstructures were refined by ausforming.
引用
收藏
页码：264 / 270
页数：7
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