Si粉微合金化对钢-铝复合材料界面的影响Effect of silicon microalloying on interface of steel-aluminum bimetallic composite
宋群玲,孙勇
摘要(Abstract):
采用粉末轧制工艺,在界面添加4%Si粉进行界面微合金化调控,成功制备出界面结合良好的钢-铝复合材料。研究了界面微合金化设计、扩散退火处理工艺对钢-铝复合材料界面区元素扩散、生成物相的影响规律,探讨了元素Si界面调控的作用机理。结果表明:添加4%Si粉界面微合金设计,在500℃扩散退火,保温1 h热处理工艺下,复合材料界面未出现金属间化合物,600℃扩散退火,保温1 h热处理工艺下,仅出现少量化合物Fe2Al5,Si粉界面微合金化处理能延缓界面化合物相生成,使生成Fe2Al5相的扩散温度向高温推移;Si扩散固溶到Fe、Al基体中形成连续固溶体,提高了界面两侧物理及力学性能的连续性,改善复合材料的界面结合。
关键词(KeyWords): 粉末轧制;微合金化;扩散退火
基金项目(Foundation): 国家自然科学基金(59401001)
作者(Author): 宋群玲,孙勇
DOI: 10.13289/j.issn.1009-6264.2012.s1.003
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