为了确定Ni3Al基合金IC6E中最佳的铝含量,在成分为Ni-14.0Mo-7.2Al-0.025B(质量分数/%,下同)的母合金中,分别加入了四种不同含量的铝(0%,0.4%,0.6%,0.8%),测定了这些合金的室温拉伸和1050℃/90MPa高温持久性能,并采用扫描电镜分析了这些合金的微观组织.综合考虑这些合金的微观组织以及力学性能,确定了在IC6E合金中最佳的铝含量为7.8%.
Abstract
In order to determine the optimum content of Al,alloys with the different amounts of Al(0%,0.4%,0.6%,0.8%)based on the master alloy composition of Ni-14.0Mo-7.2Al-0.025B(mass fraction/%) were prepared.The tensile strength at room temperature and stress rupture life at 1050℃/90MPa have been determined. The microstructures of the alloys have been studied by scanning electron microscopy.On the basis of the compromise of the microstructures and mechanical properties,the optimum content of Al was determined to be 7.8%.
关键词
Ni3Al /
Al含量 /
显微组织 /
力学性能
{{custom_keyword}} /
Key words
Ni3Al /
aluminum content /
microstructure /
mechanical property
{{custom_keyword}} /
中图分类号:
TG146
{{custom_clc.code}}
({{custom_clc.text}})
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 肖程波,韩雅芳,殷克勤,等.定向凝固Ni3Al基合金IC6的高温蠕变行为[J].材料工程,1996,(3):6-8.
[2] 肖程波,韩雅芳,张行安.定向凝固Ni3Al基高温结构材料IC6A合金的研究[J].材料工程,2001,(6):3-6.
[3] 刘庆泉.Ni3Al基IC6高温合金工程应用研究[J].航空材料学报,2003,23(增刊):209-214.
[4] 赵希宏,韩雅芳,谭永宁,等.定向凝固Ni3Al基合金IC6[J].材料工程,1997,(9):13-15.
[5] 韩雅芳,李孙华.定向凝固铸造Ni3Al基合金IC6[J].燃气涡轮试验与研究,1994,(1):48-51.
[6] 宋尽霞,肖程波,李树索,等.950℃长期时效对Ni3Al基合金IC6的组织及力学性能的影响[J].金属学报,2002,38(3):250-254.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}