GH3030合金在不同应变比下的疲劳行为及计算机辅助分析  

Fatigue Behavior of Alloy GH3030 Under Different Strain Ratio and Computer-Aided Analysis

作　　者：李扬波[1] 徐泽宇[2] 

机构地区：[1]河南机电高等专科学校计算机科学与技术系,河南新乡453002 [2]郑州大学材料科学与工程学院,河南郑州450000

出　　处：《铸造技术》2015年第8期1967-1969,共3页Foundry Technology

基　　金：河南省教育厅科学技术重点研究资助项目(13A520221;14A520045)

摘　　要：研究了GH3030合金在0.1和-1.0应变比下的高温低周疲劳行为。结果表明,应变高时会有循环硬化出现,应变低时会先软化后硬化。两种应变比下有比较接近的应变滞后回线,并且高温低周疲劳寿命差别也不明显。不论应变比是多少,都有轮胎花样出现。The high-temperature low-cycle fatigue behavior of the alloy GH3030 under the strain ratio of 0.1 and-1.0 was investigated. The results show that cycle hardening appears for the alloy GH3030 under a high stain, while the softening at first and then hardening appears under a low stain. The strain hystersis curves of the samples under the two strain ratios are similar, and the high-temperature low-cycle fatigue lives under the two cases are also comparable. Moreover, the tire pattern will appear no matter the strain ratio.

关 键 词：GH3030合金 应变 计算机辅助分析 

分 类 号：TG132.3[一般工业技术—材料科学与工程]