Characterization of mechanical properties of TaC/Fe composite layer on gray cast iron by using nano-indentation
Author:
Li Jilin12, Zhao Nana13, Li Shujuan4, Xu Yunhua5, Liu Heguang1, Shao Tiantian1, Wang Xin1
Affiliation:
1. School of Materials Science and Engineering , Xi’an University of Technology , Xian 710048 , China 2. Guangdong Academy of Sciences , Institute of Materials and Processing , Guangzhou 510000 , China 3. Shaanxi Key Laboratory of Electrical Materials and Infiltration Technology , Xi’an University of Technology , Xian 710048 , China 4. School of Mechanical and Precision Instrument Engineering , Xi’an University of Technology , Xian 710048 , China 5. Yulin University , Yulin 719000 , China
Abstract
Abstract
A TaC/Fe composite layer was prepared on a gray cast iron surface by using the interfacial reaction technique. The phase composition, microstructure and crystal structure of TaC/Fe composite layer were analyzed with X-ray diffraction, scanning electron microscopy and transmission electron microscopy. The hardness and elastic modulus of TaC/Fe composite layer were examined by nano-indentation testing. The plastic deformation behavior of TaC/Fe composite layer was characterized with the index of creep stress. The results demonstrated that the intrinsic hardness and elastic modulus of TaC/Fe composite layer were 21 GPa and 413 GPa, respectively. During nano-indentation testing, the plastic deformation resistance of TaC/Fe composite layer decreased with the increase in load, while the plastic deformation resistance decreased as the loading rate rose.
Publisher
Walter de Gruyter GmbH
Subject
Materials Chemistry,Metals and Alloys,Physical and Theoretical Chemistry,Condensed Matter Physics
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