首页|V对S30403奥氏体不锈钢微观组织和高温力学性能的影响

V对S30403奥氏体不锈钢微观组织和高温力学性能的影响

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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.
Effect of V on microstructure and high temperature mechanical properties of S30403 austenitic stainless steel
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.

austenitic stainless steelhigh temperature tensile propertydynamic recrystallization(DRX)dynamic strain aging(DSA)precipitation strengthening

沈彬、顾尚军、王劼、魏福龙、黎志英、张钧祥、李长荣

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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

首钢水城钢铁有限公司,贵州六盘水 553000

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

国家自然科学基金黔科合成果黔科合成果黔科合基础黔科合支撑黔科合支撑首钢水城钢铁(集团)有限责任公司项目

52074095QKHCG[2023]YB100QKHCG[2024]YB108QKHJC-ZK[2023]YB072QKHZC[2023]YB404QKHZC[2022]YB053HT-JSFW-202302-01

2024

10.13289/j.issn.1009-6264.2024-0109

材料热处理学报
中国机械工程学会

材料热处理学报

CSTPCD北大核心
影响因子：0.958
ISSN：1009-6264
年,卷(期)：2024.45(8)
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