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中文摘要：
基于损伤和平头压痕蠕变理论，提出采用平头压痕蠕变试验确定铝合金2A12蠕变受损试样剩余寿命的方法。具体为，（1）由拉伸蠕变试验（通过控制试验时间）获得不同损伤的试样；（2）针对受损试样，由压痕蠕变试验确定不同损伤所对应的稳态压痕蠕变深度率；（3）4RYa蠕变损伤破坏行为的Kachanov损伤理论，通过计算确定受损试样的损伤量；（4）由最终获得的稳态压痕蠕变深度率与损伤的关系曲线，采用“剩余寿命法”推断出蠕变受损铝合金试样的剩余寿命。这种方法可推广至高温构件剩余寿命的在线检测。
英文摘要：
A method of predicting residual life for creep damage specimens of Aluminum alloy 2A12 is proposed by using creep indentation tests with flat cylindrical indenters. There are four steps included in the method. First, specimens with different creep damages were obtained by tensile creep tests （by control testing time）. Second, for the above damage specimens, indentation creep tests were performed to get different steady-state indentation creep depth rates. Third, based on the Kachanov damage theory, damage values of tile damage specimens were obtained by calculations. In the end the curve of steady-state creep rates vs damage values was achieved. The ＂residual life method＂ provides the relationship between the creep damage values and the residual life, and by using it the residual life can be determined. The method can be extended to use in monitoring the residual life for high temperature components in service.
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