定向凝固镍基高温合金DZ17G的持久寿命  

Endurance Life of a Directionally Solidified Nickel Base Superalloy DZ17G

作　　者：袁超[1] 郭建亭[1] 

机构地区：[1]中国科学院金属研究所,沈阳110016

出　　处：《材料工程》2002年第5期11-13,共3页Journal of Materials Engineering

基　　金：中国科学院王宽诚博士后工作奖励基金的资助

摘　　要：分析了定向凝固镍基高温合金 DZ1 7G在广泛应力范围 (1 0 5～ 95 0 MPa)内的高温 (6 5 0～ 980℃ )持久实验数据。结果表明 ,在同一温度下 ,合金的持久寿命与施加应力间的关系符合半对数规律 ,可以利用 Manson- Succop系数法对短期实验数据进行外推 ,以预测长期持久寿命。给出了 DZ1 7G合金的持久方程及热强参数综合方程 。The stress rupture data at high temperature (650～980 ℃) and in a wide range of applied stress (105～950MPa) in a directionally solidified nickel base superalloy DZ17G has been analysed The results show that a semi logarithmic law can describe the relationship between the endurance life and applied stress at a given temperature It is suggested that the endurance life can be predicted in terms of Manson Succop time temperature parameter The endurance life equation and the thermal strength parameter equation of DZ17G superalloy are given in this paper The endurance life predicted by parametric equation conforms to the experimental results.

关 键 词：定向凝固 镍基高温合金 持久寿命 

分 类 号：TG146.15[一般工业技术—材料科学与工程]