史松宜,张亚玮,吕旭东

• 1:钢铁研究总院高温材料研究所
• 2:北京市高温合金新材料重点实验室

摘要(Abstract)：

采用激光选区熔化成形技术制备了Inconel 718合金,并对其在1050℃进行不同时间的固溶处理,研究了固溶热处理对合金的Laves相形貌及体积分数、显微结构及持久性能的影响。结果表明:随着保温时间的延长,Laves相开始溶解,形状趋于球状,体积分数由沉积态的4.9%下降至1.0%,并在合金基体上呈弥散分布;经固溶时效处理后,保留了适当体积分数Laves相的试样的持久性能(650℃/690 MPa)明显优于其它试样。

关键词(KeyWords)： Inconel 718合金;激光选区熔化;Laves相;持久性能

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 史松宜,张亚玮,吕旭东

DOI: 10.13289/j.issn.1009-6264.2020-0144

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