Nano mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing

Yu Liu; Li Jun Wang; Dong Po Wang; Ying Wang

Nano mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing

Yu Liu, Li Jun Wang, Dong Po Wang, Ying Wang^*

^*Corresponding author for this work

Tianjin University

Research output: Contribution to journal › Article › peer-review

23 Citations (Scopus)

Abstract

The mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing(USRP) was studied. Nano indentation experiments were used in determining the elastic modulus, nano hardness and residual stress of the surface layer. The test results show that the elastic modulus and hardness of surface layer can be improved significantly after USRP, the maximum values of which under 3 repeated USRP are 217.16, GPa and 3.588, GPa, and 224.8, GPa and 3.857, GPa for 6 repeated USRP, respectively, all of which are located in the surface. Meanwhile, residual compressive stresses are induced in the surface layer with the maximum value located in surface and increasing with the increase of repeated processing times. Contrast experiment results indicate that the number of reciprocating processing times has an important influence on mechanical performance.

Original language	English
Pages (from-to)	656-661
Number of pages	6
Journal	Tianjin Daxue Xuebao (Ziran Kexue yu Gongcheng Jishu Ban)/Journal of Tianjin University Science and Technology
Volume	45
Issue number	7
Publication status	Published - Jul 2012
Externally published	Yes

Keywords

40Cr
Mechanical properties
Nanoindentation
Ultrasonic surface rolling processing

Cite this

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title = "Nano mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing",

abstract = "The mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing(USRP) was studied. Nano indentation experiments were used in determining the elastic modulus, nano hardness and residual stress of the surface layer. The test results show that the elastic modulus and hardness of surface layer can be improved significantly after USRP, the maximum values of which under 3 repeated USRP are 217.16, GPa and 3.588, GPa, and 224.8, GPa and 3.857, GPa for 6 repeated USRP, respectively, all of which are located in the surface. Meanwhile, residual compressive stresses are induced in the surface layer with the maximum value located in surface and increasing with the increase of repeated processing times. Contrast experiment results indicate that the number of reciprocating processing times has an important influence on mechanical performance.",

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author = "Yu Liu and Wang, {Li Jun} and Wang, {Dong Po} and Ying Wang",

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T1 - Nano mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing

AU - Liu, Yu

AU - Wang, Li Jun

AU - Wang, Dong Po

AU - Wang, Ying

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N2 - The mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing(USRP) was studied. Nano indentation experiments were used in determining the elastic modulus, nano hardness and residual stress of the surface layer. The test results show that the elastic modulus and hardness of surface layer can be improved significantly after USRP, the maximum values of which under 3 repeated USRP are 217.16, GPa and 3.588, GPa, and 224.8, GPa and 3.857, GPa for 6 repeated USRP, respectively, all of which are located in the surface. Meanwhile, residual compressive stresses are induced in the surface layer with the maximum value located in surface and increasing with the increase of repeated processing times. Contrast experiment results indicate that the number of reciprocating processing times has an important influence on mechanical performance.

AB - The mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing(USRP) was studied. Nano indentation experiments were used in determining the elastic modulus, nano hardness and residual stress of the surface layer. The test results show that the elastic modulus and hardness of surface layer can be improved significantly after USRP, the maximum values of which under 3 repeated USRP are 217.16, GPa and 3.588, GPa, and 224.8, GPa and 3.857, GPa for 6 repeated USRP, respectively, all of which are located in the surface. Meanwhile, residual compressive stresses are induced in the surface layer with the maximum value located in surface and increasing with the increase of repeated processing times. Contrast experiment results indicate that the number of reciprocating processing times has an important influence on mechanical performance.

KW - 40Cr

KW - Mechanical properties

KW - Nanoindentation

KW - Ultrasonic surface rolling processing

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Nano mechanical properties of 40Cr surface layer after ultrasonic surface rolling processing

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