GH132 合金的循环蠕变  

Cyclic Creep in a GH132 Alloy

作　　者：周浩[1] 王翔 朱晖文 田茂胜 孔庆平 高维佳[2] 周乃标 

机构地区：[1]中国科学院固体物理研究所 [2]南京汽轮电机厂

出　　处：《材料工程》1998年第4期23-24,8,共3页Journal of Materials Engineering

摘　　要：研究了ＧＨ１３２（Ｆｅ－２５Ｎｉ－１５Ｃｒ基）合金在７７３Ｋ，应力幅８６２ＭＰａ和９２３Ｋ，应力幅５１０ＭＰａ实验条件下的循环蠕变行为。实验结果表明，在两种实验条件下随着循环周期的缩短，断裂寿命延长而包迹稳态蠕变速率减小。断裂数据作归一化处理后近似地满足线性损伤规律。根据扫描电镜和透射电镜观察，对该合金的循环蠕变行为进行了分析。The cyclic creep behaviour of the GH132 alloy (Fe25Ni15Cr based) under two testing conditions: (1) 773 K and peak stress 862 MPa, and (2) 923 K and peak stress 510 MPa has been investigated The experiments show that, under the both experimental conditions with the decrease of the cyclic period, the fracture life increases and the envelope minimum creep rate decreases After the normalization of the fracture data, it is found that the data obey the linear cumulative law The origin for the behaviour of cyclic creep is analyzed in the light of scanning and transmission electron microscopy observations

关 键 词：合金 蠕变 疲劳 交互作用 高温合金 

分 类 号：TG132.32[一般工业技术—材料科学与工程] TG113.255[金属学及工艺—合金]