Transactions of Materials and Heat Treatment

Title：Friction and wear properties on Ni-based alloy coating for hot stamping die by arc surfacing

Authors： Zhang Kemin Zhou Jie Zhang Mengmeng Liu Xuefei Zhao Yong

Unit： 1. School of Materials Science and Engineering Chongqing University 2. Chongqing Jiangdong Machinery Co. Ltd.

KeyWords： arc surfacing Ni-based alloy friction and wear oxide layers hot stamping die

ClassificationCode：TG174.44

year,vol(issue):pagenumber：2019,44(10):146-151

Abstract：

HST327 Ni-based alloy coatings were manufactured by arc surfacing technology. Then, taking SDCM steel as test reference, the friction and wear tests of HST327 Ni-based alloy and SDCM steel were conducted by the friction and wear tester at different temperatures, and the wear morphology of HST327 Ni-based alloy was observed and analyzed by scanning electron microscope (SEM). The results show that at 200 and 300 ℃ the strength and hardness of HST327 Ni-based alloy are relatively low in the first 20 min, and the wear volume of HST327 Ni-based alloy rises sharply,and the wear is serious. With the increasing of test time, the friction heat is constantly accumulated, the worn surface gradually forms a compacted oxide layer with lubrication and wear reduction effects, the wear mechanism transforms into adhesive wear and oxidative wear, and the wear volume of HST327 Ni-based alloy increases slowly after 20 min. At 300 ℃, the wear volume of HST327 Ni-based alloy is lower than that at 200 ℃ for each test time point. Thus, the wear-resistant properties of HST327 Ni-based alloy is inferior to that of SDCM steel, which is not suitable for coating of hot stamping die.

Funds：

工信部强基工程项目(TC160A310-20)

作者简介：张珂珉(1994-)，男，硕士研究生 E-mail：zkm_london@qq.com 通讯作者：周杰(1965-),男,博士,教授,博导 E-mail：zj_cqu@163.com

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