Sensitivity Analysis of Laser Quenching Parameters of ASTM 1045 of Disk Laser Based on Response Surface Method

Zhibin Yu; Chang Li; Zhengwei Chen; Yunfei Li; Xing Han

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자료유형: 학술저널

저자정보: Zhibin Yu (University of Science and Technology Liaoning) Chang Li (University of Science and Technology Liaoning) Zhengwei Chen (University of Science and Technology Liaoning) Yunfei Li (China Energy Engineering Group Northeast No. 1 Electric Power Construction Company Limited) Xing Han (University of Science and Technology Liaoning)

저널정보: 대한금속·재료학회 Metals and Materials International Metals and Materials International Vol.27 No.5

발행연도: 2021.1

수록면: 1,236 - 1,251 (16page)

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Laser hardening is an important branch of laser surface hardening technology, which is widely used in metallurgy, transportation,machinery manufacturing, aerospace and other fields. At present, relying entirely on experience or process trial-anderrormethod, it can not effectively reveal the transient mechanism of laser quenching of disk laser, which is not conduciveto shortening the research and development cycle and saving costs. The numerical simulation provides an effective way toobtain the dynamic evolution law of multi-field coupling in laser quenching process. In this paper, a thermo-mechanicalcoupling model of ASTM 1045 laser quenching process by disk laser is established. In the model, the temperature-dependentphysical parameters were calculated by CALPHAD method. The transient law of temperature and microstructural transformationduring quenching was obtained by solving the model. The formation and transformation degree of martensite werecharacterized by the dynamic changes of the depth and width of quenched transformation layer. The quenching structure andtransformation hardening law were observed by Axioskop 2 SEM and Zeiss-IGMA HD FE-SEM to verify the accuracy ofthe simulation results. On this basis, the process parameters of laser quenching were sampled by Monte-Carlo method basedon response surface methodology. The sensitivity effects of different process parameters on the temperature field and phasechange field of laser quenching were analyzed, which laid a theoretical foundation for the optimization of process parameters.

#Laser quenching · Disk laser · Sensitivity analysis · Quenching · Microstructures

참고문헌 (26)

참고문헌 신청

A. F. Golovin / 1968 / The centennial of D. K. Chernov’s discovery of polymorphous transformations in steel (1868–1968) / Met. Sci. Heat Treat. 10:5

Y. Jianhua / 2012 / Laser Surface Modifcation Technology and Application / National Defense Industry Press

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X. Cao / 2018 / Investigation on the microstructure and damage characteristics of wheel and rail materials subject to laser dispersed quenching / Appl. Surf. Sci. 450:468~483

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