V对S30403奥氏体不锈钢微观组织和高温力学性能的影响
Effect of V on microstructure and high temperature mechanical properties of S30403 austenitic stainless steel
沈彬 1顾尚军 2王劼 2魏福龙 2黎志英 1张钧祥 1李长荣1
作者信息
- 1. 贵州大学材料与冶金学院,贵州贵阳 550025;贵州省冶金与过程节能重点实验室,贵州贵阳 550025
- 2. 首钢水城钢铁有限公司,贵州六盘水 553000
- 折叠
摘要
研究了 3种不同V含量(0 mass％、0.097 mass％和0.19 mass％)的S30403奥氏体不锈钢在500～900 ℃高温下的拉伸行为.结果表明:在500～900℃范围内,3种实验钢的抗拉强度都随着拉伸温度的升高而降低.V含量为0.097 mass％的实验钢在600、700和800℃的极限抗拉强度是3种钢中最高的,分别为362.9、271.4和156.1 MPa,这是不同温度下动态应变时效、动态再结晶和析出强化的协同作用的结果.含V钢在500～900℃范围内拉伸后的断面收缩率高于不含V钢,当V含量为0.19 mass％时,实验钢的断面收缩率最高,这是由于基体中固溶的V元素促进了实验钢的动态再结晶.
Abstract
Tensile behavior of S30403 austenitic stainless steels with three different V contents(0 mass％,0.097 mass％and 0.19 mass％)was investigated at high temperatures ranging from 500-900 ℃.The results show that within the range of 500-900 ℃,the tensile strength of the three experimental steels decreases with the increase of tensile temperature.The ultimate tensile strength of the experimental steel with V content of 0.097 mass％is the highest among the three steels at 600,700 and 800 ℃,which are 362.9,271.4 and 156.1 MPa,respectively.This is the result of the synergistic effect of dynamic strain aging,dynamic recrystallization and precipit-ation strengthening at different temperatures.The reduction of area of V-containing steel after tensile testing in the range of 500-900 ℃ is higher than that of V-free steel.When the V content is 0.19 mass％,the experimental steel has the highest reduction of area.This is because the solid solution of V element in the matrix promotes the dynamic recrystallization of the experimental steel.
关键词
奥氏体不锈钢/高温拉伸性能/动态再结晶(DRX)/动态应变时效(DSA)/析出强化Key words
austenitic stainless steel/high temperature tensile property/dynamic recrystallization(DRX)/dynamic strain aging(DSA)/precipitation strengthening引用本文复制引用
基金项目
国家自然科学基金(52074095)
黔科合成果(QKHCG[2023]YB100)
黔科合成果(QKHCG[2024]YB108)
黔科合基础(QKHJC-ZK[2023]YB072)
黔科合支撑(QKHZC[2023]YB404)
黔科合支撑(QKHZC[2022]YB053)
首钢水城钢铁(集团)有限责任公司项目(HT-JSFW-202302-01)
出版年
2024
NETL
NSTL
万方数据