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Evaluation of automobile service performance using laboratory testing

机译:使用实验室测试评估汽车服务性能

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摘要

A methodology is presented to evaluate martensitic advanced high-strength steels in auto service. There was essentially no influence of hydrogen for (i) linearly increasing stress tests of specimens with hydrogen contents much greater than for automobile service, and (ii) for tensile tests with simultaneous hydrogen charging and with a substantial hydrogen content. These results allow evaluation of the hydrogen influence for the tested steels for auto service. In contrast, electrochemically hydrogen charged martensitic advanced high-strength steels showed an influence of hydrogen on mechanical properties, manifest as (i) a decrease in yield strength, by hydrogen enhanced macroscopic ductility, and (ii) a change of the micro-fracture mode, by hydrogen-assisted micro-fracture.
机译:提出了一种方法来评估汽车服务中的马氏体高强度钢。 基本上没有氢气的影响(i)线性增加具有氢气含量的标本的应力测试大于汽车服务,并且(ii)具有同时氢气充电的拉伸试验和具有大量氢含量的拉伸试验。 这些结果允许评估用于汽车服务的测试钢的氢气影响。 相比之下,电化学氢带电的马氏体高强度钢显示出氢对机械性能的影响,表现为(i)屈服强度降低,通过氢增强宏观延展性,以及(ii)微骨折模式的变化 ,通过氢辅助微骨折。

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