METALS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
Microstructure and Properties of Fe-based Amorphous Coating on Q235 Steel Substrate by TIG Welding |
LI Yue1, LI Yulong1, LI Xuewen1,2
|
1 Key Laboratory for Robot & Welding Automation of Jiangxi Province, Mechanical & Electrical Engineering School, Nanchang University, Nanchang 330031, China 2 Engineering Training Center, Mechanical & Electrical Engineering School, Nanchang University, Nanchang 330031, China |
|
|
Abstract In order to study the effects of different heat input on the microstructure and properties of Fe-based amorphous coatings, Fe-based amorphous alloy coatings were prepared on Q235 substrate by TIG deposition. The microstructures, phase composition, mechanical properties and thermal stability of the coatings were analyzed by optical microscopy (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), nanoindentation and differential scanning calorimetric (DSC). The results show that the coating is uniform and compact, and metallurgical combined with the substrate. The degree of crystallization of the coating increases with the increase of the heat input of the weld, and the Crystallized phases are α-Fe, Cr12Fe36Mo10 and CrFe4. The average nanohardness of the coating decreases with the increase of the heat input, the maximum nanohardness reaches 7.55 GPa, which is three times that than of the substrate. The crystallization temperature of the coating decreases with the increase of the welding heat input, and the maximum crystallization temperature is 506.8℃.
|
Published: 12 September 2020
|
|
Fund:This work was financially supported by the Academic and Technical Leaders Founding Project of Major Disciplines of Jiangxi Province (20182BCB22001). |
About author:: Yue Liis a postgraduate student of material processing engineering of Nanchang University. His main research direction is the preparation of amorphous coatings. Xuewen Liis a master of engineering and an engineer of the Nanchang University Engineering Training Center. He is engaged in scientific research and teaching in brazing and precision processing. |
|
|
1 Lashgari H R, Chen Z, Liao X Z, et al. Materials Science and Enginee-ring: A, 2015, 626, 480. 2 Wang F, Inoue A, Kong F L, et al. Journal of Alloys and Compounds, 2018, 732, 637. 3 Guo Y, Koga G Y, Jorge Jr A M, et al. Materials & Design, 2016, 111, 608. 4 Shu F Y, Liu S, Zhao H Y, et al. Journal of Alloys and Compounds, 2018, 731, 662. 5 Cao J W, Han J G, Guo Z H, et al. Materials Science and Engineering: A, 2016, 673, 141. 6 Zhou Z, Wang L, Wang F C, et al. Surface and Coatings Technology, 2009, 204(5), 563. 7 Deng Dewei, Chen Rui, Zhang Hongchao. Journal of Mechanical Engineering, 2013, 49(7), 106(in Chinese). 邓德伟, 陈蕊, 张洪潮. 机械工程学报,2013,49(7), 106. 8 Deuis R L, Yellup J M, Subramanian C. Composites Science and Techno-logy, 1998, 58(2), 299. 9 Zou Yinsu, Liu Junyou, Liu Jie, et al. Hot Working Technology, 2013, 2013(1), 160(in Chinese). 邹因素, 刘俊友, 刘杰,等. 热加工工艺, 2013(1), 160. 10 Li Fengwei, Du Ping, Wei Gang, et al. Well Testing, 2016(5), 1(in Chinese). 李峰伟,杜平,魏刚,等. 油气井测试, 2016(5),1. 11 Chen Shanshana, Fan Zishuana, Sun Dongbai, et al. China Surface Engineering. 2011(3), 78(in Chinese). 陈珊珊,樊自拴,孙冬柏,等. 中国表面工程, 2011(3), 78. 12 Wang Bin, Zhou Cui, Zhu Jiaxiang, et al. Journal of Functional Mate-rials, 2014(19), 19070(in Chinese). 王斌,周翠,朱加祥,等. 功能材料, 2014(19), 19070. 13 Yan Tao, Fan Zishuan, Zhang Zhengdong. Surface Technology, 2013(4), 87(in Chinese). 晏涛,樊自拴,张正东. 表面技术, 2013(4),87. 14 Li Yulong,Yu Yexiao. Electric Welding Machine, 2012(12),70(in Chinese). 李玉龙,禹业晓. 电焊机, 2012(12), 70. 15 Gong Miao, Dai Shijie, Wang Liwen, et al. Journal of Chongqing University of Technology(Natural Science), 2019, 33(12), 101(in Chinese). 龚淼,戴士杰,王立文,等. 重庆理工大学学报(自然科学), 2019,33(12),101. 16 An Yulong, Zhao Xiaoqin, Zhou Huidi, et al. China Surface Enginee-ring, 2013, 26(5), 64(in Chinese). 安宇龙,赵晓琴,周惠娣,等. 中国表面工程, 2013, 26(5), 64. 17 Bykkam S, Ahmadipour M, Narisngam S, et al. Advances in Nanoparticles, 2015, 4(1), 1. 18 Lashgari H R, Cadogan J M, Chu D, et al. Materials & Design, 2016, 92, 919. 19 Sun Y Y, Song M, Liao X Z, et al. Materials Science and Engineering: A, 2012, 543,145. 20 Fornell J, González S, Rossinyol E, et al. Acta Materialia, 2010, 58(19), 6256. 21 Kumar A, Kumar R, Bijalwan P, et al. Journal of Alloys and Compounds, 2019, 771, 827. 22 Leyland A, Matthews A. Surface and Coatings Technology, 2004, 177, 317. 23 Schuh C A, Hufnagel T C, Ramamurty U. Acta Materialia, 2007, 55(12),4067. 24 Zhang H, Xie Y, Huang L, et al. Surface and Coatings Technology, 2014, 258, 495. |
|
|
|