【摘 要】
：
研究稀土Ce元素对HMn64-8-5-1.5合金的组织和力学性能的影响.结果表明：添加Ce元素可以细化铸态和热挤压态HMn64-8-5-1.5合金的基体晶粒，同时减少大块硬质相的尺寸和数量，促进细小的Mn5Si3硬质相析出；硬质相在受拉应力时产生裂纹源，添加稀土Ce增加硬质相数量，进而产生更多的裂纹源，降低HMn64-8-5-1.5合金的力学性能.
【出 处】
：
第六届海内外中华青年材料科学技术研讨会暨第十五届全国青年材料科学技术研讨会
论文部分内容阅读
研究稀土Ce元素对HMn64-8-5-1.5合金的组织和力学性能的影响.结果表明：添加Ce元素可以细化铸态和热挤压态HMn64-8-5-1.5合金的基体晶粒，同时减少大块硬质相的尺寸和数量，促进细小的Mn5Si3硬质相析出；硬质相在受拉应力时产生裂纹源，添加稀土Ce增加硬质相数量，进而产生更多的裂纹源，降低HMn64-8-5-1.5合金的力学性能.
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