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什么是钢的屈服强度,极限强度和持久强度?

问答题
2022-01-01 13:00
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正确答案
在拉伸试验中,当试样应力超过弹性极限后,继续增加拉力达到某一数值时,拉力不增加或开始有所降低,而试样仍然能继续变形,这种现象称为“屈服”。钢开始产生屈服时的应力称为屈服强度。钢能承受最大载荷(即断裂载荷)时的应力,称为极限强度。钢在高温长期应力作用下,抵抗断裂的能力,称为持久强度。

试题解析

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