摘要
本文研究了Mo对IN718合金经680℃长期时效后组织和拉伸性能稳定性的影响。结果表明,Mo降低γ″相和γ′相在长期时效的过程中的长大速率,抑制α-Cr相析出。因此,Mo提高合金长期时效后拉伸性能的稳定性,并且Mo含量越高,合金经680℃长期时效后的抗拉强度越高。
Abstract： The effect of Mo on the stability of microstructure and tensile properties of IN718 alloy after long-term aging at 680℃ for up to 2000h has been investigated. The results show- that during the long-tern1 aging at 680℃, Mo reduces the coarsening rate of γ″ phase and γ′phase, inhibits the precipitation of α-Cr phase. There- fore, Mo improves the stability of the tensile properties of IN718 alloy. In addition, Mo improves the ultimate tensile strength of IN718 alloy with the increase in the content of Mo.
作者
韩大尉
孙文儒
刘芳
张滨
胡壮麒
Hart Dawei;Sun Wenru;Liu Fang;Zhang Bin;Hu Zhuangqi(School of Materials Science and Engineering, Northeastern University, Shenyang 110819;Institute of Metal Research, Chinese Academy of Science, Shenyang 110016)
出处
《特钢技术》
CAS
2018年第2期4-9,20,共7页
Special Steel Technology
