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材料工程  2013 

α污染层对ZTC4钛合金铸态试样冲击性能的影响

DOI: 10.3969/j.issn.1001-4381.2013.06.012, PP. 59-62

Keywords: 钛合金铸件,污染层,微观组织,力学性能

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Abstract:

在表征ZTC4钛合金铸件污染层的基础上,分析了α污染层对ZTC4钛合金铸态试样冲击性能的影响情况。实验结果表明,α污染层主要是由钛液与铸型材料界面反应产生的,为粗大的α片层组织。α污染层的存在对ZTC4钛合金铸态试样冲击性能影响显著,当铸态试样含α污染层一侧受冲击时,冲击强度下降了近9%;而当铸态试样含α污染层一侧的背面受冲击时,冲击强度下降了近80%,α污染层严重恶化了ZTC4钛合金铸态试样的冲击性能。

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