Elevated-temperature properties of one long-life high-strength gun steel

被引：2
作者：
Maoqiu Wang
机构：
来源：
Journal of University of Science and Technology Beijing(English Edition) | 2004年 / 01期
关键词：
secondary hardening steel; elevated-temperature strength; hot hardness; impact toughness;
D O I：
暂无
中图分类号：
TG142 [钢];
学科分类号：
080502 ;
摘要：
The hardness, tensile strength and impact toughness of one quenched and tempered steel with nominal composition of Fe-0.25C-3.0Cr-3.0Mo-0.6Ni-0.1Nb (mass fraction) both at room temperature and at elevated temperatures were investigated in order to develop high-strength steel for long-life gun barrel use. It is found that the steel has lower decrease rate of tensile strength at elevated temperature in comparison with the commonly used G4335V high-strength gun steel, which contains higher Ni and lower Cr and Mo contents. The high elevated-temperature strength of the steel is attributed to the strong secondary hardening effect and high tempering softening resistance caused by the tempering precipitation of fine Mo-rich M2C carbides in the α-Fe matrix. The experimental steel is not susceptible to secondary hardening embrittlement, meanwhile, its room-temperature impact energy is much higher than the normal requirement of impact toughness for high strength gun steels. Therefore, the steel is suitable for pr
引用
收藏
页码：62 / 66
页数：5
相关论文
共 47 条
[41]   High temperature tensile properties of laser-welded high-strength Mg-Gd-Y-Zr alloy in as-welded and heat-treated conditions [J].
Wang, Lyuyuan ;
Huang, Jian ;
Dong, Jie ;
Li, Zhuguo ;
Wu, Yixiong .
WELDING IN THE WORLD, 2017, 61 (02) :299-306
[42]   New insights from crystallography into the effect of Ni content on ductile-brittle transition temperature of 1000 MPa grade high-strength low-alloy steel [J].
Ni, Zeqing ;
Zhao, Jingxiao ;
Wang, Xuelin ;
Shang, Chengjia ;
Zhou, Wenhao .
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T, 2024, 33 :589-599
[43]   Mechanical properties of one-sided welding for the low-temperature steel using a high-current MAG welding [J].
Cho, Youngho ;
Kim, Byungcheol ;
Lee, Changmin ;
Kang, Namhyun .
WELDING IN THE WORLD, 2023, 67 (11) :2609-2619
[44]   Mechanical properties of one-sided welding for the low-temperature steel using a high-current MAG welding [J].
Youngho Cho ;
Byungcheol Kim ;
Changmin Lee ;
Namhyun Kang .
Welding in the World, 2023, 67 :2609-2619
[45]   Welding of S960QL High-Strength Steel by the Manual-Automated MAG Technique-A Study of Mechanical Properties, Residual Stresses and Fracture Mechanisms in the Heat-Affected Zone [J].
Slezak, Tomasz .
MATERIALS, 2024, 17 (23)
[46]   Effect of Secondary Welding Thermal Cycle Peak Temperature on Microstructure and Properties in Simulated Reheat Coarse Grain Heat Affected Zone of High Strength Medium-Mn Steel [J].
M. M. Zhao ;
X. Y. Qi ;
L. X. Du ;
L. Yan ;
R. D. K. Misra .
Journal of Materials Engineering and Performance, 2023, 32 :8380-8389
[47]   Effect of Secondary Welding Thermal Cycle Peak Temperature on Microstructure and Properties in Simulated Reheat Coarse Grain Heat Affected Zone of High Strength Medium-Mn Steel [J].
Zhao, M. M. ;
Qi, X. Y. ;
Du, L. X. ;
Yan, L. ;
Misra, R. D. K. .
JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE, 2023, 32 (18) :8380-8389
12345