李刚,许新颖,葛少成,高鹏,王智明

• 1:辽宁工程技术大学材料科学与工程学院
• 2:辽宁工程技术大学安全科学与工程学院

摘要(Abstract)：

通过对掺杂钨精矿粉末的Fe40Al60粉末压坯进行激光点燃自蔓延烧结,制备原位自生颗粒增强复合材料。利用表征手段分析钨精矿粉末添加量对烧结合金显微组织结构及宏观性能的影响规律。结果表明,随钨精矿粉含量的增加,合金显微组织由片状变为颗粒状,烧结合金物相主要为Al2O3、FeAl、Fe3Al、Fe7W6、W及硬质颗粒相WO3。当钨精矿粉末含量为1%时,烧结合金密度最大,为4.27 g/cm3;孔隙率最小,为12.2%;硬度最高,上表层区达到1050 HV,中部区达到1818 HV,底层区达到1232 HV;合金磨损率最低,表层区为0.99 mg/mm2,中部区为0.59 mg/mm2,底层区为0.75 mg/mm2;合金耐蚀性能最好,腐蚀电流密度为116μA/cm2。

关键词(KeyWords)： Fe-Al金属间化合物;激光烧结;显微组织;硬度

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51274116);; 辽宁省自然科学基金(2014020155)

作者(Author): 李刚,许新颖,葛少成,高鹏,王智明

DOI: 10.13289/j.issn.1009-6264.2014.11.003

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