白亚冠,聂义宏,朱怀沈,赵帅.Al-Nb含量对转子用GH706合金组织及力学性能的影响[J].稀有金属材料与工程,2019,48(4):1317~1324.[Bai Yaguan,Nie Yihong,Zhu Huaishen,Zhao Shuai.Effect of Al-Nb Content on Microstructure and Properties of GH706 Alloy for Rotor[J].Rare Metal Materials and Engineering,2019,48(4):1317~1324.]
Al-Nb含量对转子用GH706合金组织及力学性能的影响
投稿时间:2017-09-08  修订日期:2017-12-18
中文关键词:  GH706  长时时效  析出相  力学性能
基金项目:国家能源应用技术研究及工程示范项目(项目号NY20150101-1)
中文摘要:
      研究了提Al降Nb对GH706合金经过高温长时时效处理前后的组织与力学性能的影响。结果表明,提Al降Nb的成分改进抑制了高温不稳定存在的γ′′相、η相及Laves相和δ相等TCP相的析出,同时,在经过750℃保温500小时的处理后,只存在γ′和η相的轻微长大,力学性能下降幅度有限,仍保持在一个较高的水平,而未进行成分改进的合金(传统GH706)中的析出相等均发生明显长大,力学性能下降幅度较大,可见提Al降Nb的成分改进可使得合金在更高的温度服役。
Effect of Al-Nb Content on Microstructure and Properties of GH706 Alloy for Rotor
英文关键词:GH706  long time age  precipitate  mechanical properties
英文摘要:
      The effects of increasing Al and decreasing Nb on microstructure and mechanical properties of GH706 alloy before and after long time age heat treat were studied. Result show that increasing Al content and decreasing Nb content in alloy contribute to disappear of γ′′、Laves and δ phases in alloy, and after aged at 750℃ for 500h, γ′ and η grow up slightly and mechanical properties reduce limited. While precipitates of alloy without modification(conventional GH706) grow up rapidly and mechanical properties decrease obviously. The result indicated that the alloy can be used at higher temperature with modification of increasing Al and decreasing Nb.
作者单位E-mail
白亚冠 中国一重天津重型装备工程研究有限公司 302baiyaguan@163.com 
聂义宏 中国一重天津重型装备工程研究有限公司 nieyihong@126.com 
朱怀沈 中国一重天津重型装备工程研究有限公司  
赵帅 中国一重天津重型装备工程研究有限公司  
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