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首页> 外文期刊>ISIJ international >Deformation Behavior of Low Carbon TRIP Sheet Steels at High Strain Rates
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Deformation Behavior of Low Carbon TRIP Sheet Steels at High Strain Rates

机译：低碳TRIP钢板在高应变速率下的变形行为

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摘要

Two high strength transformation-induced plasticity (TRIP) sheet steels with 0.10wt% and 0.14wt% carbon were produced with retained austenite volume fractions varying from less than 3% up to 16%. These TRIP steels were tensile tested at strain rates ranging from 10~(-3) to 2.5x10~2s~(-1) to determine the effects of strain rate and retained austenite volume fraction on tensile properties. Increasing the retained austenite volume fraction increases UTS, total elongation, uniform strain and total absorbed energy, but decreases yield strength and absorbed energy below 10% engineering strain. Increasing strain rate increases yield strength and UTS, and creates a better-defined yield point, but has little effect on strain hardening behavior for TRIP steels with 11 % or less retained austenite. The TRIP steel with 16% retained austenite shows increasing strain hardening rate with strain rate at low strains.
机译：生产了两种碳含量分别为0.10wt％和0.14wt％的高强度相变诱发塑性（TRIP）钢板，残余奥氏体体积分数从小于3％到高达16％不等。这些TRIP钢在10〜（-3）至2.5x10〜2s〜（-1）的应变速率下进行了拉伸测试，以确定应变速率和残余奥氏体体积分数对拉伸性能的影响。增加残余奥氏体体积分数会增加UTS，总伸长率，均匀应变和总吸收能，但会降低屈服强度和低于10％工程应变的吸收能。应变速率的增加会提高屈服强度和UTS，并产生更好的屈服点，但对残余奥氏体含量为11％或更少的TRIP钢的应变硬化行为影响很小。残余奥氏体含量为16％的TRIP钢在低应变下显示出随应变率增加的应变硬化率。

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