压力容器2018，Vol.35Issue(5)：22-27,6.DOI:10.3969/j.issn.1001-4837.2018.05.004
Haynes 230镍基超合金高温低周疲劳寿命预测
Prediction of High Temperature Low Cycle Fatigue Life of Haynes 230 Nickel-Base Superalloy
摘要
Abstract
A series of low cycle fatigue tests at high temperature were carried out for Haynes 230 nickel-base superalloy under the total strain control.The results show that at 816℃and 927℃,the material ex-hibits cyclic hardening/softening behavior in the range of higher total strain and exhibits cyclic harden-ing/saturation behavior in the range of lower total strain.Generally,the fatigue life decreases with increas-ing temperature.However,when the total strain range is higher than 1.0%,the fatigue life at 927 ℃ is longer than that at 816℃due to the presence of smaller plastic strain amplitude at 927℃than 816℃at half life.The fatigue life prediction was performed using the Manson -Coffin equation and the energy method.The prediction capabilities of the two models were compared using the variance and dispersion band factor.The results show that the Manson-Coffin equation has better prediction effect.关键词
Haynes 230镍基超合金/高温低周疲劳/循环硬化/疲劳寿命预测Key words
Haynes 230 nickel-base superalloy/ high temperature low cycle fatigue/ cyclic hardening/fatigue life prediction分类
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王伟,吕春堂,刘兵,金丹..Haynes 230镍基超合金高温低周疲劳寿命预测[J].压力容器,2018,35(5):22-27,6.基金项目
国家自然科学基金项目(11102119) （11102119）
辽宁省自然科学基金项目(201602586) （201602586）
