The characteristics of μ phase precipitated during 720 °C long-term aging in alloy 617B

被引：14
|
作者：
Jiang, He [1 ]
Dong, Jianxin [1 ]
Zhang, Maicang [1 ]
机构：
[1] Univ Sci & Technol Beijing, Sch Mat Sci & Engn, Beijing 100083, Peoples R China
来源：
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T | 2019年 / 8卷 / 02期
基金：
中国国家自然科学基金;
关键词：
Nickel-base superalloy; Alloy; 617B; mu phase; MICROSTRUCTURE; EVOLUTION; EXPOSURE;
D O I：
10.1016/j.jmrt.2018.11.006
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In this work, the precipitation of mu phase is detected in alloy 617B during 720 degrees C aging for 10 000 h. The lattice parameters of mu phase is determined as a = 0.4720-0.4760 nm and c = 2.5394-2.5656 nm in this work. The mu phase in alloy 617B is mainly composed of Mo and Cr, in accompany with Ni and Co. The chemical formula of mu phase in samples aged for 5000 h and 10 000 his (Ni0.031Co0.084Cr0.885)(2.34)Mo and (Ni0.030Co0.091Cr0.879)(2.30)Mo, respectively. The precipitation of mu phase competes with M23C6 carbide for Cr and Mo elements. (C) 2018 Brazilian Metallurgical, Materials and Mining Association. Published by Elsevier Editora Ltda.
引用
收藏
页码：2461 / 2465
页数：5
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