Effects of quenching medium and tempering temperature on microstructures, mechanical properties, and fatigue behavior of EA4T steel

被引：4
|
作者：
Yao, Zhenghong [1 ]
Hao, Jin [1 ]
Dai, Weibing [2 ]
Li, Changyou [1 ]
Zhang, Hongzhuang [1 ]
Zhang, Yimin [3 ]
机构：
[1] Northeastern Univ, Sch Mech Engn & Automat, Shenyang, Peoples R China
[2] Liaoning Tech Univ, Sch Mech Engn, Fuxin, Peoples R China
[3] Zhaoqing Univ, Coll Mech & Automot Engn, Zhaoqing, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2022年 / 165卷
基金：
中国国家自然科学基金;
关键词：
EA4T steel; Quenching medium; Tempering temperature; Microstructure; Fatigue behavior; CRACK GROWTH; FRACTURE-TOUGHNESS; TENSILE PROPERTIES; HEAT-TREATMENT; COOLING RATE; STRENGTH; TRANSFORMATION; MARTENSITE; BAINITE; DISLOCATION;
D O I：
10.1016/j.ijfatigue.2022.107179
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
This paper investigated the effects of quenching medium (5% salt water or 12.5% PAG solution) and tempering temperature (600 degrees C or 650 degrees C) on microstructures, mechanical properties, and fatigue behavior (FB) of EA4T steel. Microstructures were characterized by OM, SEM, and EBSD techniques. Improved FB of samples was obtained with the quenching medium of 5% salt water followed by tempering at 600 degrees C. The presence of refined grain size and the decreased volume fraction of lath bainite (LB) significantly improved the FB. Furthermore, the combined effects of grain size and LB volume fraction on FB were revealed.
引用
收藏
页数：15
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