Nano-Mechanical Behavior and Nano-Tribological Properties of 316 Stainless Steel  

作　　者：LUO Yong GE Shi-rong 

机构地区：[1]School of Mechatronics Engineering, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China [2]School of Materials Science and Engineering, China University of Mining ＆ Technology, Xuzhou, Jiangsu 221008, China

出　　处：《Journal of China University of Mining and Technology》2006年第3期249-253,共5页中国矿业大学学报（英文版）

基　　金：Project 50535050 supported by National Natural Science Foundation of China

摘　　要：The microstructure and nano-tribological properties of 316 austenitic stainless steel have been investigated by using the in situ nano-mechanical testing system Tribolndenter, in which six different normal forces were chosen to make a scratch and indentation. The results show that the contact depth of the indentation increases with the normal force and material is piled up on the edge of the indentation as plastic distortion. The stable nano-hardness and the reduced modulus of 316 austenitic stainless steel are approximately 6 GPa and 160 GPa, respectively. The friction coefficients of 316 stainless steel with conic-type diamond tip have a typical value of about 0.13, 0.15, 0.17, 0.19, 0.22 and 0.25 when the normal forces are kept at 500 μN, 1000 μN, 1500 μN, 2000 μN, 2500 μN and 3000 μN, revealing an increasing trend with the normal forces. The increase of the friction coefficient in the unloading segment may result from the adhesion force caused by the material piled up.The microstructure and nano-tribological properties of 316 austenitic stainless steel have been investigated by using the in situ nano–mechanical testing system TriboIndenter, in which six different normal forces were chosen to make a scratch and indentation. The results show that the contact depth of the indentation increases with the normal force and material is piled up on the edge of the indentation as plastic distortion. The stable nano–hardness and the reduced modulus of 316 austenitic stainless steel are approximately 6 GPa and 160 GPa, respectively. The friction coefficients of 316 stainless steel with conic-type diamond tip have a typical value of about 0.13, 0.15, 0.17, 0.19, 0.22 and 0.25 when the normal forces are kept at 500 μN, 1000 μN, 1500 μN, 2000 μN, 2500 μN and 3000 μN, revealing an increasing trend with the normal forces. The increase of the friction coefficient in the unloading segment may result from the adhesion force caused by the material piled up.

关 键 词：NANO-SCRATCH nano-indentation 316 stainless steel biomaterial FRICTION WEAR 

分 类 号：R318.08[医药卫生—生物医学工程] TG142.71[医药卫生—基础医学]