Effect of Parameters of Semi-solid Stirring on Microstructure of A356-10%B4Cp Composites
ZHANG Xuefei1, BAI Jingyuan2, GUAN Renguo2,3
1 School of Mechanical Engineering, Shenyang University, Shenyang 110044, China 2 School of Materials Science and Engineering, Northeastern University,Shenyang 110819, China 3 State Key Laboratory of Solidification Technology, Northwest Polytechnic University, Xi'an 710072, China
Abstract: In this paper, a semi-solid stirring and hot rolling process was used to prepare A356-10%B4Cp composite sheet, the effects of semi-solid stirring parameters on the as-cast and hot-rolled microstructures of the A356-10%B4Cp composites were studied. It is found that, when the mi-xing temperature is 580 ℃, the mixing time is 15 min, stirring speed is within 800 r/min, the average diameter and roundness of α-Al grains decrease with the increase of stirring speed, and the distribution of B4C particles tends to be uniform. When the stirring speed exceeds 800 r/min, the average diameter and roundness of α-Al did not decrease, and the distribution of B4C particles tends to be nonuniform. When the mixing temperature is 580 ℃, stirring speed is 800 r/min, stirring time is within 5—35 min, the average diameter and roundness of α-Al decreased with the increase of stirring time, and the distribution of B4C particles was also uniform. The optimum technological parameters are as follows: stirring temperature is 580 ℃, stirring speed is 800 r/min, stirring time is 35 min. The A356-10%B4Cp composite plate with smooth surface can be obtained after hot rolling of the composite ingot prepared by the process.
1 Zhang L J, Qiu F, Wang J G, et al Materials Science & Engineering A,2015,626,338. 2 Qi H B, Ding Z L, Fan Y C, et al. Acta Materiae Compositae Sinica, 2001, 18(1),62(in Chinese). 齐海波,丁占来,樊云昌,等.复合材料学报, 2001, 18(1),62. 3 Karamic B, Nair Fehmi. Wear, 2008, 265(11), 1741. 4 Mahmoud E R I, Takahashi M, Shibayanagi T, et al. Wear, 2009, 268(9), 1111. 5 Selvam J D R, Smart D S R, Dinaharan I. Materials & Design, 2013, 49(16),28. 6 Wang Y Q, Song J I. Wear, 2011, 270(7), 499. 7 Lashgari H R, Sufizadeh A R, Emamy M. Materials & Design, 2010, 31(4), 2187. 8 Zhang J, Guan R G, Tie D, et al. Advanced Manufacturing Processes,2015, 30(3),6. 9 Hu Q, Zhao H, Ge J. Materials Science & Engineering A, 2016, 650,478. 10 Chen H S, Wang W X, Nie H H, et al. Vacuum, 2017, 143,363. 11 Shaga A, Shen P, Sun C, et al. Materials Science and Engineering: A, 2015, 630, 78. 12 Yang B, Wang F, Zhang J S. Acta Materialia, 2003, 51(17),4977. 13 Tekmen C, Cocen U. Journal of Composite Materials, 2008, 42(13),1271. 14 Mandal D, Dutta B K, Panigrahi S C. Wear, 2004, 257(7), 654. 15 Zhang Xuefei, Bai Jingyuan, Guan Renguo,et al. Materials Review B: Research Papers, 2019,33(1),298(in Chinese). 张雪飞,白景元,管仁国,等.材料导报:研究篇, 2019,33(1),298. 16 Fu Xueying. Study on processing condition of B4C/Al composites prepared by stirring casting. Master's Thesis, Harbin Engineering University, 2005(in Chinese). 傅雪莹. 搅拌法制备B4C/Al复合材料的工艺研究.硕士学位论文,哈尔滨工程大学,2005. 17 Shan Xiaolei. Research on sem-solid microstructure of the AZ91D magnesium alloy fabricated by coupled large deformation-isothermal method. Master's Thesis, Harbin Institute of Technology, China, 2006(in Chinese). 单晓磊. 大变形—等温耦合制备AZ91D半固态组织研究.硕士学位论文,哈尔滨工业大学, 2006.
渝公网安备50019002502923号 版权所有：《材料导报》编辑部
2020, Vol. 34 
