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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