热处理对快速凝固ZK60镁合金薄带组织和硬度的影响Effect of heat treatment on microstructure and microhardness of rapidly solidified ZK60 magnesium ribbons
杨文朋,郭学锋,杨凯军
摘要(Abstract):
采用单辊甩带法制备了ZK60镁合金薄带,研究了不同条件热处理薄带的组织和显微硬度。结果表明,薄带由晶粒尺寸<8μm的等轴α-Mg、球状β′2相和少量杆状β′1相组成;热处理温度<300℃时,晶粒无长大;温度>300℃时,晶粒显著长大。原始薄带显微硬度约为50HV,300℃×2h热处理后显微硬度值最大约为80HV;β′1和β′2相的弥散强化作用是薄带硬度提高的内在原因。
关键词(KeyWords): ZK60镁合金;快速凝固;显微硬度;热处理
基金项目(Foundation): 陕西省教育厅产业化培育项目(04JC24);; 陕西省自然科学研究计划项目(2003E1112002E110);; 教育部回国留学人员重点基金(20070700003)
作者(Author): 杨文朋,郭学锋,杨凯军
DOI: 10.13289/j.issn.1009-6264.2010.04.020
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