Microstructure and Mechanical Properties of Tempered Ausrolled Nanobainite Steel

被引：3
|
作者：
Zhao, Jing [1 ]
Liu, Dezheng [1 ]
Li, Yan [1 ]
Yang, Yongsheng [2 ]
Wang, Tiansheng [3 ]
Zhou, Qian [4 ]
机构：
[1] Hubei Univ Arts & Sci, Sch Mech Engn, Hubei Key Lab Power Syst Design & Test Elect Vehi, Xiangyang 441053, Peoples R China
[2] Wuhan Text Univ, Sch Chem & Chem Engn, Hubei Key Lab Biomass Fibers & Ecodyeing & Finish, Wuhan 430073, Peoples R China
[3] Yanshan Univ, State Key Lab Metastable Mat Sci & Technol, Qinhuangdao 066004, Hebei, Peoples R China
[4] Hebei Univ Engn, Coll Mat Sci & Engn, Handan 056038, Peoples R China
来源：
CRYSTALS | 2020年 / 10卷 / 07期
基金：
中国国家自然科学基金;
关键词：
tempered; ausrolled nanobainite; microstructures; mechanical properties; TRANSFORMATION BEHAVIOR; BAINITE TRANSFORMATION; SILICON STEELS; MEDIUM-C; CARBON; TEMPERATURE; AUSTENITE; MARTENSITE;
D O I：
10.3390/cryst10070573
中图分类号：
O7 [晶体学];
学科分类号：
0702 ; 070205 ; 0703 ; 080501 ;
摘要：
The microstructures and mechanical properties of ausrolled nanobainite steel, after being tempered at temperatures in the range of 200-400 degrees C, were investigated in this study. After being tempered, bainitic ferrite is coarsened and the volume fraction of retained austenite is reduced. The hardness and ultimate tensile strength decrease sharply. The impact energy, yield strength, and elongation increase with elevated tempered temperature at 200-300 degrees C but decrease with elevated tempered temperature when the samples are tempered at 350 degrees C and 400 degrees C. The fracture appearance of all the samples after impact tests is a brittle fracture. The variation of the mechanical properties may be due to partial recovery and recrystallization.
引用
收藏
页码：1 / 11
页数：11
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