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首页> 外文期刊>ISIJ international >Effect of microstructure on static and dynamic mechanical property of a dual phase steel studied by shear punch testing
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Effect of microstructure on static and dynamic mechanical property of a dual phase steel studied by shear punch testing

机译：剪切冲头试验研究组织对双相钢静态和动态力学性能的影响

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The high-speed deformation behavior of a dual phase steel was studied by means of dynamic Hopkinson bar shear punch testing, with an emphasis on the influence of microstructure. Dual phase microstructures with different fractions of martensite were obtained by changing heat treatment parameters during intercritical annealing. The effects of low temperature tempering (170 deg C, 235 deg C, and 300 deg C) and bake hardening treatment (5 percent pre-strain followed by holding at 170 deg C for 20 min) were also investigated for two selected microstructures containing 22 percent and 61 percent martensite, respectively. Quasi-static shear punch property was also measured by a MTS hydraulic machine and compared with dynamic results. Additionally, quasi-static tensile tests for some specimens were also conducted for validating the shear punch data.
机译：通过动态霍普金森棒剪切冲床试验研究了双相钢的高速变形行为，重点是微观组织的影响。通过在临界退火过程中改变热处理参数，获得了具有不同马氏体含量的双相组织。还针对两个包含22个微结构的选定微结构，研究了低温回火（170℃，235℃和300℃）和烘烤硬化处理（5％的预应变，然后在170℃下保持20分钟）的影响。马氏体分别为50％和61％。还通过MTS液压机测量了准静态剪切冲头的性能，并与动态结果进行了比较。此外，还对一些试样进行了准静态拉伸试验，以验证剪切冲头数据。

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