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[1]史振学,刘世忠.Al含量对镍基单晶高温合金组织和持久性能的影响[J].有色金属科学与工程,2019,(02):77-82.[doi:10.13264/j.cnki.ysjskx.2019.02.011]
　SHI Zhenxue,LIU Shizhong.Influence of Al content on microstructure and stress rupture properties a Ni-base single crystal superalloy[J].,2019,(02):77-82.[doi:10.13264/j.cnki.ysjskx.2019.02.011]
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Al含量对镍基单晶高温合金组织和持久性能的影响(/HTML)
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《有色金属科学与工程》[ISSN:1674-9669/CN:36-1311/TF]

卷:
期数:
2019年02期
页码:
77-82
栏目:
出版日期:
2019-03-20

文章信息/Info

Title:
Influence of Al content on microstructure and stress rupture properties a Ni-base single crystal superalloy
文章编号:
1674-9669(2019)02-0077-06
作者:
史振学; 　刘世忠
（北京航空材料研究院先进高温结构材料重点实验室, 北京100095）
Author(s):
SHI Zhenxue;  LIU Shizhong
(Science and Technology on Advanced High Temperature Structural Materials Laboratory, Beijing Institute of Aerial Materials, Beijing 100095, China)
关键词:
单晶高温合金;  Al含量; 组织稳定性;  持久性能
分类号:
TG132.32
DOI:
10.13264/j.cnki.ysjskx.2019.02.011
文献标志码:
A
摘要:
采用选晶法在定向凝固炉中制备了5.6 % Al和6.0 % Al的2种单晶高温合金，保持其它合金元素含量相同，热处理后在1 040 ℃长期时效800 h，采用扫描电镜研究了Al含量对合金共晶含量、热处理组织、长期时效组织和持久性能的影响. 结果表明，随着Al含量增加，合金铸态组织中的共晶含量稍有增加，热处理组织中枝晶干γ′相无明显变化，枝晶间的γ′相稍有增大. 随着Al含量增加，合金时效组织中TCP相析出量增加，枝晶间γ′相筏排化倾向增加，合金的组织稳定性变差. 随着Al含量增加，合金的持久寿命增加，延伸率和断面收缩率减小.

参考文献/References:


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备注/Memo

备注/Memo:
收稿日期：2018-01-12
基金项目：国家重点实验室基金资助项目（9140C430101120C4301）
通信作者：史振学（1975- ），男,博士，高级工程师，主要从事单晶高温合金研究，E-mail:shizhenxue@126.com.
更新日期/Last Update: 2019-04-30