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[1]史振学,杨万鹏,刘世忠,等.长期时效温度对一种单晶高温合金组织和拉伸性能的影响[J].有色金属科学与工程,2018,(04):35-39.
　SHI Zhenxue,YANG Wanpeng,LIU Shizhong,et al.Effect of thermal exposure at different temperature on the stress rupture properties of a single crystal superalloy[J].,2018,(04):35-39.
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长期时效温度对一种单晶高温合金组织和拉伸性能的影响(/HTML)
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《有色金属科学与工程》[ISSN:1674-9669/CN:36-1311/TF]

卷:
期数:
2018年04期
页码:
35-39
栏目:
出版日期:
2018-08-25

文章信息/Info

Title:
Effect of thermal exposure at different temperature on the stress rupture properties of a single crystal superalloy
作者:
史振学;  杨万鹏;  刘世忠;  王效光
北京航空材料研究院 先进高温结构材料重点实验室, 北京10009
Author(s):
SHI Zhenxue;  YANG Wanpeng;  LIU Shizhong;  WANG Xiaoguang
Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aeronautical Materials, Beijing 100095
关键词:
单晶高温合金;  长期时效; 拉伸性能; 组织
分类号:
TG132.3+2
DOI:
-
文献标志码:
A
摘要:
在定向凝固炉中采用螺旋选晶法制备了一种单晶高温合金试棒，标准热处理后分别在980 ℃，1070 ℃，1100 ℃和1140 ℃长期时效处理500 h，研究了不同温度长期时效后合金的显微组织和1100 ℃的拉伸性能。结果表明合金在不同温度长期时效后，γ′相发生粗化或筏排化。随着时效温度增加，γ′相粗化或筏排化程度增加，γ′相体积分数减少，γ相基体通道变宽。在980 ℃长期时效500 h后，无TCP相析出；1070 ℃，1100 ℃，1140 ℃长期时效500 h后，有针状TCP相析出。随着长期时效温度增加，TCP相含量增加。随着时效温度升高，合金拉伸强度降低，拉伸延伸率先增加后在1140 ℃时效时又降低。长期时效后γ′相粗化或筏排化、γ′相含量减少和TCP相析出是合金拉伸强度降低的主要原因。

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备注/Memo

备注/Memo:
收稿日期：2018-3-26
基金项目：国防基金(9140A18040115HK51248)
作者简介：史振学，(1975-),男,博士，高工,研究方向:单晶高温合金. Email:shizhenxue@126.com
更新日期/Last Update: 2018-08-20