邓德伟,耿延朝,田鑫,庄春瑜

• 1:大连理工大学材料科学与工程学院
• 2:沈阳鼓风机集团股份有限公司

摘要(Abstract)：

利用等离子堆焊技术在304L钢板表面制备了添加Nb粉的Ni40合金堆焊层,并对堆焊层的微观组织、显微硬度和耐磨性进行研究。结果表明,堆焊层组织主要由γ-Ni树枝晶、枝晶间的共晶组织、弥散分布的Nb C颗粒、硼化物和碳化物等相组成。由于增强相Nb C颗粒在堆焊层中均匀分布,使Nb/Ni40复合合金堆焊层与纯Ni40合金堆焊层相比,显微硬度提高约40%(平均达到448 HV0.3),耐磨性也提高约37.5%。

关键词(KeyWords)： 等离子堆焊;NbC颗粒;微观组织;显微硬度;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 国家“973”课题(2011CB013402);; 国家自然科学基金(11072045);; 辽宁省自然科学基金(2014028002)

作者(Author): 邓德伟,耿延朝,田鑫,庄春瑜

DOI: 10.13289/j.issn.1009-6264.2014.s2.043

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