Effect of serrated grain boundaries on the creep property of Inconel 718 superalloy

被引：125

作者：

Yeh, An-Chou ^{[1
,2
]}

Lu, Kang-Wei ^{[1
]}

Kuo, Chen-Ming ^{[1
]}

Bor, Hui-Yun ^{[3
]}

Wei, Chao-Nan ^{[3
]}

机构：

[1] I Shou Univ, Dept Mech & Automat Engn, Kaohsiung 84001, Taiwan

[2] MIRDC, Met Proc R&D Dept, Kaohsiung, Taiwan

[3] Chung Shan Inst Sci & Technol, Mat & Electroopt Res Div, Tao Yuan 32599, Taiwan

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2011年 / 530卷

关键词：

IN718; Serrated grain boundaries; Creep; BASE SUPERALLOY;

D O I：

10.1016/j.msea.2011.10.014

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

This article presents an investigation of the effect of serrated grain boundaries on the high temperature creep behaviour of IN718 superalloy. XRD, DSC, SEM and TEM have been conducted to study the microstructures; experimental results have shown that the morphology of grain boundaries can be a function of heat treatment conditions. In addition, creep tests have been performed on samples with and without serrated grain boundaries under 650 degrees C/625 MPa. In conclusions, the formation of delta phase during the heat treatment can influence the morphology of grain boundaries, and an improvement of 400 h creep rupture life has been attributed to the serrated grain boundaries. (C) 2011 Elsevier B.V. All rights reserved.

引用

页码：525 / 529

页数：5

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