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首页> 外文期刊>Journal of Materials Engineering and Performance >The Application of Stress-Relaxation Test to Life Assessment of T911/T22 Weld Metal
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The Application of Stress-Relaxation Test to Life Assessment of T911/T22 Weld Metal

机译：应力松弛试验在T911 / T22焊接金属寿命评估中的应用

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摘要

A dissimilar weld metal was obtained through submerged arc welding of a T911 steel to a T22 steel, and its creep property was explored by stress-relaxation test assisted by some conventional creep tests. The creep rate information of the stress-relaxation test was compared to the minimum and the average creep rates of the conventional creep test. Log-log graph showed that the creep rate of the stress-relaxation test was in a linear relationship with the minimum creep rate of the conventional creep test. Thus, the creep rate of stress-relaxation test could be used in the Monkman-Grant relation to calculate the rupture life. The creep rate of the stress-relaxation test was similar to the average creep rate, and thereby the rupture life could be evaluated by a method of "time to rupture strain." The results also showed that rupture life which was assessed by the Monkman-Grant relation was more accurate than that obtained through the method of "time to rupture strain.".
机译：通过将T911钢与T22钢进行埋弧焊获得了一种不同的焊接金属，并通过一些常规蠕变测试辅助的应力松弛测试来探索其蠕变性能。将应力松弛测试的蠕变速率信息与常规蠕变测试的最小和平均蠕变速率进行了比较。对数对数图表明，应力松弛试验的蠕变速率与常规蠕变试验的最小蠕变速率呈线性关系。因此，应力松弛试验的蠕变速率可用于Monkman-Grant关系中以计算断裂寿命。应力松弛试验的蠕变速率与平均蠕变速率相似，因此可以通过“断裂时间”来评估断裂寿命。结果还表明，由蒙克曼-格兰特（Monkman-Grant）关系评估的断裂寿命比通过“断裂应变时间”方法获得的断裂寿命更准确。

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