不锈钢表面等离子合金化渗铜层的纳米力学性能研究  

On the Nano-mechanical Properties of Copper Infiltrated Layer on Stainless Steel Surface Based on Plasma Surface Alloying Technique

作　　者：袁智[1] 王玥[1] 韩志军[1] 张睿[1] 杨尚余 邢学刚[1] 卢盼娜 

机构地区：[1]太原理工大学力学学院,山西030024

出　　处：《实验力学》2016年第4期550-556,共7页Journal of Experimental Mechanics

基　　金：国家自然科学基金(11172195);山西省青年基金(2013021013-5);太原理工大学校青年基金(2012L073)资助

摘　　要：为了研究不锈钢渗铜层的纳米力学性能,本文采用等离子表面合金化技术在304不锈钢表面制备了渗铜层。利用纳米压入硬度仪,采用连续刚度测试法,对渗铜层以及不锈钢基体的表面和横截面的纳米力学性能进行了测试,得到了纳米压入过程的载荷-压入深度曲线,发现渗铜层抵抗外载荷的能力低于不锈钢基体。并得到了渗铜层和不锈钢基体的表面、横截面方向的硬度以及杨氏模量,经对比得到渗铜层的杨氏模量和硬度都要比不锈钢基体的低,并且渗铜层的力学性能表现出各向异性。对纳米压入的数据进行分析,发现渗铜层在小尺度压入时硬度和杨氏模量表现出明显的"尺度效应"。In order to study the nano-mechanical properties of copper infiltrated layer on stainless steel surface,copper infiltrated layer was prepared on a 304 stainless steel substrate by plasma surface alloying technique.Using nanoindentation hardness tester and continuous stiffness measurement method,the nano-mechanical property measurement was carried out for copper infiltrated layer and stainless steel surface along both normal direction and substrate cross-section direction.The loadindentation depth curve during nano-indentation process was obtained.It is revealed that the ability to resist the external load of copper infiltrated layer is lower than that of stainless steel substrate.Both hardness and Young＇s modulus of copper infiltrated layer and stainless steel substrate surface and cross-section were obtained respectively.Comparison shows that both hardness and Young＇s modulus of copper infiltrated layer are lower than that of stainless steel substrate.And nano-mechanical properties of copper infiltrated layer exhibit anisotropy. Moreover,the hardness and Young＇s modulus of copper infiltrated layer exhibit significant scale effect in small-scale indentation.

关 键 词：不锈钢 等离子表面合金化技术 渗铜层 纳米压入 纳米力学性能 

分 类 号：TG146.11[一般工业技术—材料科学与工程]