文献类型：期刊文献

英文题名：A New Modified Theta Projection Model for Creep Property at High Temperature

作者：Liu, Hui[1];Peng, Fan[1];Zhang, Yuping[1];Li, Yiran[1];An, Kang[1];Yang, Yanqing[1];Zhang, Yunxia[1];Guan, Xiqiang[1];Zhu, Wujun[2]

机构：[1]Shanghai Normal Univ, Coll Informat Mech & Elect Engn, 100 Haisi Rd, Shanghai 201418, Peoples R China;[2]East China Univ Sci & Technol, Sch Mech & Power Engn, 130 Meilong Rd,POB 402, Shanghai 200237, Peoples R China

年份：2020

卷号：29

期号：7

起止页码：4779

外文期刊名：JOURNAL OF MATERIALS ENGINEERING AND PERFORMANCE

收录：;EI(收录号：20203008970684);WOS:【SCI-EXPANDED(收录号:WOS:000550630900001)】；

语种：英文

外文关键词：creep; modified theta projection model; P92 alloy

摘要：The theta projection method proposed by Evans and Wilshire is being widely used, as its advantages and flexibility are becoming increasingly appreciated. But in fact, some studies have shown that the theta projection method has its own shortcomings. For example, it fails to accurately describe the creep behaviors under constant load conditions. In the present paper, a new modified theta projection model is proposed to describe the variations of creep strain with time for the studied P92 alloy under constant load condition. The creep curves predicted by using the proposed model agree well with experimental data, which confirms that this established creep constitutive model can give an accurate and precise estimate of the creep behavior for P92 alloy.