引用本文:褚清坤,余春风,邓朝阳,胡新广,闫星辰,胡永俊,刘敏.TiC含量对激光选区熔化Inconel625合金微观组织及表面摩擦磨损性能的影响∗[J].中国表面工程,2021,34(1):76~84
Zhe Qingkun,Yu Chunfeng,Deng Chaoyang,Hu Xinguang,Yan Xingchen,Hu Yongjun,Liu Min.Effect of TiC on Microstructure and Wear Properties of Inconel 625 Alloy Fabricated via Selective Laser Melting Technology[J].China Surface Engineering,2021,34(1):76~84
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TiC含量对激光选区熔化Inconel625合金微观组织及表面摩擦磨损性能的影响∗
褚清坤1,2, 余春风1,2, 邓朝阳2, 胡新广2,3, 闫星辰2, 胡永俊1, 刘敏2
1.广东工业大学材料与能源学院 广州 510006;2.广东省科学院新材料研究所现代材料表面工程技术国家工程实验室 广州 510650;3.五邑大学智能制造学部 江门 529020
摘要:
为了提高 3D 打印镍基高温合金强度、硬度及耐磨性能,使用激光选区熔化技术(Selective laser melting, SLM)制备添加不同质量分数 TiC 增强 Inconel 625 合金材料,并对比添加不同质量分数 TiC(4 wt. %和 8 wt. %)所制备的 SLM TiC/ Inconel 625 试样的摩擦磨损性能。 结合 X 射线衍射仪(XRD),金相显微镜(OM),扫描电子显微镜(SEM)及能谱分析(EDS)等材料表征手段对 TiC/ Inconel 625 试样的物相分布,微观组织结构及磨损前后的元素分布进行对比分析。 结果表明,随着 TiC 含量的增高,SLM TiC/ Inconel 625 硬度从 325 HV0. 2(不含 TiC)升高到了 587 HV0. 2(SLM 8 wt. % TiC/ Inconel 625),磨损率也由 22. 4×10-5 mm3/ (N·m)下降为 9. 8×10-5 mm3 / (N·m)。 其中,平均摩擦磨损系数最小的为 SLM 4 wt. % TiC/ Inconel 625 (COF=0. 47)。 综合对比可以发现通过添加适量的 TiC 颗粒可以有限改善 SLM Inconel 625 的硬度及耐磨损性能。
关键词:  激光选区熔化  Inconel 625  TiC  微观组织  摩擦磨损
DOI：10.11933/j.issn.1007-9289.20200908002
分类号:TG113;TG146
基金项目:广东特支计划(2019BT02C629)、广东省科学院院士科研基金专项(2018GDASCX-0402)和广州市对外科技合作(201807010030)资助项目
Effect of TiC on Microstructure and Wear Properties of Inconel 625 Alloy Fabricated via Selective Laser Melting Technology
Zhe Qingkun1,2, Yu Chunfeng1,2, Deng Chaoyang2, Hu Xinguang2,3, Yan Xingchen2, Hu Yongjun1, Liu Min2
1.College of Materials and Energy, Guangdong University of Technology, Guangzhou 510006 , China;2.National Engineering Laboratory for Modern Materials Surface Engineering Technology, Institute of New Materials, Guangdong Academy of Sciences, Guangzhou 510650 , China;3.Faculty of Intelligent Manufacturing, Wuyi University, Jiangmen 529020 , China
Abstract:
In order to improve the strength, hardness and wear resistance of nickel-based superalloys, selective laser melting ( SLM) technology is used to fabricate Inconel 625 alloy with different TiC content. The friction and wear properties of SLM TiC/ Inconel 625 samples with a series of TiC content (4 wt. % and 8 wt. %) are in-depth studied and analyzed. The phase distribution, microstructure and element distribution before and after wear tests of the SLM TiC/ Inconel 625 samples are investigated using X-ray diffractometer (XRD), metallographic microscope (OM), scanning electron microscope (SEM), energy dispersive spectroscopy (EDS) and other advanced material characterization methods. The results show that with the increase of TiC content, the hardness of SLM TiC/ Inconel 625 increased from 325 HV0. 2(without TiC) to 587 HV0. 2(with 8 wt. % TiC). The wear rate of these samples was also decreased from 22. 4×10-5 mm3 / (N·m) to 9. 8×10-5 mm3 / (N·m). Among these samples, SLM TiC/ Inconel specimen (with 4 wt. %) has the lowest average coefficient of friction (COF= 0. 47). It is proved that the hardness and wear resistance of SLM Inconel 625 samples canbe enhanced by adding an appropriate amount of TiC particles.
Key words:  selective laser melting  Inconel 625  TiC  microstructure  friction and wear
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