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纯铁和铁基合金楔形样品中的冲击相变研究

DOI: 10.11858/gywlxb.2008.01.019, PP. 89-94

Keywords: 冲击相变,DT2工业纯铁,HR2抗氢钢,金相分析,显微硬度

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Abstract:

使用平面爆轰波起爆元件起爆TNT炸药,分别对DT2工业纯铁和HR2抗氢钢楔形样品进行了冲击加载实验。在回收样品中,DT2纯铁表现为宏观不规则破坏,而HR2钢仅在样品内部沿加载面约45°角和垂直方向出现了宏观裂纹。通过金相组织观察、显微硬度分布测量,结合数值计算,表明DT2纯铁样品在距加载面约2mm范围内产生了不完全α-ε相变,在HR2钢中未发生相变。不完全相变可能是导致两种材料宏观破坏特征差异的因素。

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