| METAIS AND METAL MATRIX COMPOSITES |
|
|
|
|
|
| Influence of Rare Earth Ce on Hydrogen Content and Weld Porosity of Sr Modified Al-5Si Aluminum Alloy Welding Wires |
| ZHANG Peng1, XUE Songbai1, FEI Wenpan1, WANG Bo1, HAN Yilong1, PEI Yinyin2, ZHONG Sujuan2
|
1 College of Materials Science and Technology,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China
2 State Key Laboratory of Advanced Brazing Filler Metals and Technology,Zhengzhou Research Institute of Mechanical Engineering Co.,Ltd.,Zhengzhou 450002,China |
|
|
|
|
Abstract The effects of rare earth Ce on the hydrogen-absorption tendency of Sr modified molten Al-5Si welding wire, hydrogen content of the welding wire and porosity of the welds were investigated by means of pressure reduction and solidification method, solid-state hydrogen measurement and X-ray detection, respectively. A notable increase in the hydrogen content of Al-5Si aluminum alloy welding wire and porosity of the welds was observed when 0.02wt% Sr was added exclusively. Additionally, when 0wt%~0.05wt% Ce was introduced into Al-5Si-0.02Sr wel-ding wire, the increase of Ce content brought about the decline in hydrogen content of Al-5Si-0.02Sr-xCe welding wire. And Al-5Si-0.02Sr-xCe welding wire achieved the minimum hydrogen content of 0.07 mL/(100 g Al) under the condition of 0.05wt% Ce, which was 81.6% lower than that of Al-5Si-0.02Sr welding wire. Further raise of Ce content to 0.1wt% failed to make any difference in the hydrogen content of Al-5Si-0.02Sr welding wire. In terms of the weld porosity, it generally shared the same variation trend of hydrogen content of the welding wire caused by the increasing Ce content. Moreover, welds free of gas pore was successfully accessible, when Ce content was no less than 0.05wt%. Adding Ce to Al-5Si-0.02Sr welding wire could scarcely exert any effect on the tensile properties of the welding joints, but obviously improve the bending pro-perties and ductility.
|
|
Published: 03 January 2020
|
|
|
| About author:: Peng Zhangreceived his B.S. degree in material scie-nce and engineering from Nanjing University of Aeronautics and Astronautics (NUAA) in 2018. He is currently pursuing his Ph.D. at the College of Material Science and Technology in NUAA under the supervision of Prof. Songbai Xue. His research has focused on advanced welding technology;Songbai Xueis currently a level-2 professor and Ph.D. supervisor at the College of Material Science and Technology in Nanjing University of Aeronautics and Astronautics (NUAA). He has focused on welding materials and technology for decades. During these years, he formulated 5 national standards and 5 professional standards of Ministry of Machinery Industry. Besides, he earned more than thirty major research achievements, including a second prize of 2016 State Science and Technology Progress Award, a second prize of 2014 technical invention award of the Ministry of Education, a third prize of National Defense Science and Technology Progress Award, et al. |
|
|
| 1 |
Lu Q B, Long W M, Zhong S J, et al. Welding & Joining, 2016 (2), 6(in Chinese).路全彬, 龙伟民, 钟素娟, 等. 焊接, 2016 (2), 6.2 Liu H, Xue S B, Dai W. Transactions of the China Welding Institution, 2014, 35(12), 93(in Chinese).刘晗, 薛松柏, 戴玮. 焊接学报, 2014, 35(12), 93.3 Giovanni M D, Warnett J M, Williams M A, et al. Journal of Alloys and Compounds, 2017, 727, 353.4 Han K, Mao X M, Ouyang Z Y, et al. Special Casting & Nonferrous Alloys, 2004 (2), 61(in Chinese).韩奎, 毛协民, 欧阳志英, 等. 特种铸造及有色合金, 2004 (2), 61.5 Tsai Y C, Chou C Y, Lee S L, et al. Journal of Alloys and Compounds, 2009, 487(1), 157.6 Qiu C, Miao S, Li X, et al. Materials & Design, 2017, 114, 563.7 Dong Y, Zheng R G, Lin X P, et al. Journal of Rare Earths, 2013, 31(2), 204.8 Wang B, Xue S B, Ma C L, et al. Transactions of Nonferrous Metals Society of China, 2017, 27(2), 272.9 Sun H Q, Zhao Y T, Chen G, et al. Hot Working Technology, 2007, 36(13), 5(in Chinese).孙洪强, 赵玉涛, 陈刚, 等. 热加工工艺, 2007, 36(13), 5.10 Wang B, Xue S B, Wang J X, et al. Journal of Rare Earths, 2017, 35(2), 94.11 Zhang S T, Wang L, Yang X H, et al. Materials Review A: Review Papers, 2009, 23(11), 43(in Chinese).张淑婷, 王磊, 杨晓华, 等. 材料导报:综述篇, 2009, 23(11), 43.12 Ambriz R R, Chicot D, Benseddiq N, et al. European Journal of Mechanics, 2011, 30(3), 307.13 Wang B, Xue S B, Ma C L, et al. Metals, 2017, 7(11), 463.14 Qiao J Y, Wang W Q, Ruan Y, et al. Materials Review B:Research Papers, 2018, 32(1), 254(in Chinese).乔建毅, 王文权, 阮野, 等. 材料导报:研究篇, 2018, 32(1), 254.15 Yuri T, Ogata T, Saito M, et al. Cryogenics, 2001, 41(7), 475.16 He C, Cui S M, Liu Y J, et al. Transactions of the China Welding Institution, 2014(11), 18(in Chinese).何超, 崔仕明, 刘永杰, 等. 焊接学报, 2014(11), 18.17 Gou G, Zhang M, Chen H, et al. Materials & Design, 2015, 85, 309.
|
|
|
|
渝公网安备50019002502923号 © Editorial Office of Materials Reports.
2020, Vol. 34 
