崔洪芝,魏娜,赫庆坤,白斌

• 1:山东科技大学材料科学与工程学院

摘要(Abstract)：

以Ni粉和Al粉为原料,通过热爆反应合成及空冷制备Ni-Al系金属间化合物。利用X射线衍射仪、电子探针和显微硬度计分析了合成试样的物相组成、显微组织及硬度。结果表明:当Ni、Al摩尔比为1∶1时,反应生成物为单一的枝晶状NiAl相;当Ni、Al摩尔比为3∶1时,生成物组织形态复杂,主要由枝晶状β-NiAl、粗大块状和网状γ-Ni3Al、不规则的块状或者短棒状γ'-Ni3Al、板条状和针片状M-NiAl组成。因为γ'-Ni3Al在β-NiAl晶粒内部析出造成的应力场、NiAl中富含大量Ni及非平衡冷却,有利于β-NiAl转变成M-NiAl。

关键词(KeyWords)： NiAl;Ni3Al;热爆合成;物相组成;组织结构

Abstract:

Keywords:

基金项目(Foundation): 国家自然基金资助项目(51072104,51272141);; 山东省“泰山学者”计划(ts20110828);; 山东省博士基金(BS2010CL038)

作者(Author): 崔洪芝,魏娜,赫庆坤,白斌

DOI: 10.13289/j.issn.1009-6264.2013.07.006

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