Nanoindentation Size Effect on Type 316 Stainless Steel

作     者：姚远 YAO Yuan 1) QIAO Li-jie 1) Qiang Shi-san 2) CAO Xian-kun 3) CHU Wu-yan 1) 1)University of Science and Technology Beijing;2)Hong Kong Polytechnic University;3)Tsinghua University

作者机构：University of Science and Technology Beijing 

出 版 物：《Journal of Wuhan University of Technology(Materials Science)》 (武汉理工大学学报（材料科学英文版）)

年 卷 期：2004年第19卷第B10期

页      面：30-33页

核心收录：

学科分类：07[理学] 070205[理学-凝聚态物理] 08[工学] 080501[工学-材料物理与化学] 0805[工学-材料科学与工程（可授工学、理学学位）] 0702[理学-物理学] 

基　　金：FundedbytheNationalNaturalScienceFoundationofChi na (No .5 0 1710 13)andtheSpecialFoundationfortheNationalStateBasicResearchProject(No.G19990 6 5 0 ) 

主　　题：nanoindentation indentation size effect type 316 stainless steel 

摘      要：Nanoindentation size effect was investigated under very low loads on type 316 stainless steel. Nanoindentation measurements were carried out on the samples surfaces with a Berkovich pyramidal diamond indenter applying loads in the range of 25-1000μN. Simultaneously, AFM images of the sample surface were recorded before and after indentation process .For type 316 stainless steel, the indentation size effect was found. The results were discussed in the terms of the model of geometrically necessary dislocations proposed to interpret the indentation size *** can be seen that the square of the nanohardness, H 2, vs the inverse of indentation depth, 1/h, is linearly dependent on the indented depth in the range of 25-150nm,which is a good qualitative agreement with the predictions of the model. However, for shallow indents, the slope of the line severely *** possible mechanisms for this change were proposed.