Si含量对GH2909合金性能的影响  

Effect of Si Content on Properties of GH2909 Alloy

作　　者：樊照远[1] 李许明[2] 宋传荣[2] 闫磊[2] 宋金贵 

机构地区：[1]海军驻沈阳地区发动机专业军事代表室,辽宁沈阳110043 [2]沈阳黎明航空发动机(集团)有限责任公司技术中心,辽宁沈阳110043

出　　处：《热加工工艺》2017年第14期107-109,共3页Hot Working Technology

摘　　要：研究了Si含量对GH2909合金室温拉伸、高温拉伸和持久性能的影响。结果表明:在一定含量范围内,提高Si含量可促进GH2909合金中ε相的析出,有利于降低GH2909合金的缺口敏感性从而提高缺口持久性能。同时Si含量提高降低了GH2909合金的室温、高温拉伸强度,提高了塑性。The effects of silicon content on the room temperature tensile properties, high temperature tensile properties and endurance property of GH2909 alloy were studied. The results show that within a certain range, increasing the silicon content can promote the precipitation of e phase in GH2909 alloy, which can help reduce the notch sensitivity of the GH2909 alloy, and then the endurance property of the notch improves. At the same time, increasing silicon content can reduce room temperature and high temperature tensile strength of GH2909 alloy, and its plasticity improves.

关 键 词：GH2909合金 SI含量 持久性能 Ε相 缺口敏感性 

分 类 号：TG113[金属学及工艺—物理冶金]