基于修正θ投影法的GH4169高温合金蠕变寿命预测

doi:10.3969/j.issn.1672-6952.2020.03.013

辽宁石油化工大学学报 ›› 2020, Vol. 40 ›› Issue (3): 69-73.DOI: 10.3969/j.issn.1672-6952.2020.03.013

基于修正θ投影法的GH4169高温合金蠕变寿命预测

张爽，刘峰，李荣华，张国铭

辽宁石油化工大学机械工程学院，辽宁抚顺 113001

收稿日期:2019-11-01 修回日期:2019-11-26 出版日期:2020-06-29 发布日期:2020-07-06
通讯作者: 刘峰（1971⁃），男，博士，教授，从事材料疲劳与断裂、腐蚀与防护技术方面的研究；E⁃mail：Liuf20000@163.com。
作者简介:张爽（1993?），女，硕士研究生，从事金属力学性能方面的研究；E?mail：2824487917@qq.com。

Creep Life Prediction of GH4169 Based on the Modified θ Projection Method

Zhang Shuang， Liu Feng， Li Ronghua， Zhang Guoming

School of Mechanical Engineering，Liaoning Shihua University，Fushun Liaoning 113001，China

Received:2019-11-01 Revised:2019-11-26 Published:2020-06-29 Online:2020-07-06

摘要/Abstract

摘要： 在不同温度和不同应力条件下，对GH4169高温合金进行了蠕变实验，得到不同参数下的蠕变数据并绘制了相应的蠕变寿命曲线。利用修正θ投影法，对得到的实验寿命曲线进行非线性拟合，建立了温度、应力相关的蠕变方程。用所建立的蠕变方程验证了GH4169高温合金蠕变寿命曲线，结果表明吻合性较好，达到了蠕变寿命预测的效果。

关键词: GH4169合金, 　修正θ投影法, 　蠕变, 　寿命预测

Abstract: Based on modified θ projection method, creep experiments were carried out on GH4169 superalloy under different temperature and stress conditions,the creep data under different parameters were obtained and corresponding creep curves were drawn.The modified θ projection method was used to perform nonlinear fitting of the obtained experimental curve,and creep equations related to temperature and stress were established.The creep life curve of GH4169 superalloy is verified by the creep equations,and the results are in good agreement,so as to reach the effect of creep life prediction.

Key words: Superally GH4169, Modified &theta, projection method, Creep, Life prediction

张爽, 刘峰, 李荣华, 张国铭. 基于修正θ投影法的GH4169高温合金蠕变寿命预测[J]. 辽宁石油化工大学学报, 2020, 40(3): 69-73.

Zhang Shuang, Liu Feng, Li Ronghua, Zhang Guoming. Creep Life Prediction of GH4169 Based on the Modified θ Projection Method[J]. Journal of Liaoning Petrochemical University, 2020, 40(3): 69-73.

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基于修正θ投影法的GH4169高温合金蠕变寿命预测

Creep Life Prediction of GH4169 Based on the Modified θ Projection Method

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