SEMI–SOLID A356 ALLOY SLURRY PREPARED BY A NEW PROCESS

Acta Metall Sin

2009, Vol. 45

Issue (4): 507-512 DOI:

论文

Current Issue | Archive | Adv Search

SEMI–SOLID A356 ALLOY SLURRY PREPARED BY A NEW PROCESS

LIU Zheng ^1;2; MAO Weimin ²; ZHAO Zhenduo ²

1. School of Material and Chemistry Engineering; Jiangxi University of Science and Technology; Ganzhou 341000
2. School of Materials Science and Engineering; University of Science and Technology Beijing; Beijing 100083

Cite this article:

LIU Zheng MAO Weimin ZHAO Zhenduo. SEMI–SOLID A356 ALLOY SLURRY PREPARED BY A NEW PROCESS. Acta Metall Sin, 2009, 45(4): 507-512.

Download:

PDF(3188KB)
Export: BibTeX | EndNote (RIS)

Abstract

Because of the solidifying characteristic of alloy and the difference in thermal conductivity of mould, the microstructures of different zones of semi–solid slurry are different, which is hard to satisfy the requirement of rheoforming. A new process preparing semi–solid slurry is proposed, in which a locally rapid cooling near the center zone of mould can be realized by inserting a copper rod into the slurry and then pulling out repeatedly, except application of a weakly electromagnetic stirring. Semi–solid A356 alloy slurry was prepared by the new process and the effects of the new process on morphology and size of primary α–Al in semi–solid A356 were researched. The results indicate that the nucleation rate, morphology and grain size of primary α–Al are markedly improved by the new process. Primary α–Al with small size presents particle–like or globular–like and distributes uniformly in the slurry even at lower overheating. The grain refining and structural homogeneity are relative to homogenization of the temperature field in the mould.

Key words: A356 alloy semi--solid slurry copper rod stirring electromagnetic stirring

Received: 20 August 2008

ZTFLH:	TG146
	TG244

Fund:

Supported by National Natural Science Foundation of China (No.50374012) and Natural Science Foundation of Jiangxi Province (No.0650047)

	Service

	E-mail this article
	Add to citation manager
	E-mail Alert
	RSS
	（）
	Articles by authors
	LIU Zheng
	MAO Wei-Min
	DIAO Zhen-Duo

URL:

https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y2009/V45/I4/507

[1] Flemings M C. Solidification Process. New York: Mcgraw–Hill; 1974: 222
[2] Cardoso E, Atkinson H V, Jones H. In: Alexandrou A, Apelian D, Georgiou G eds., Proc 8th Int Conf on Semi-solid Processing of Alloys and Composites, Limassol: University of Cyprus, 2004: 296
[3] Pan Y, Zhang C Y, Yuan H Y, Sun G X. Acta Metall Sin, 2001; 37: 1035
(潘冶, 张春燕, 袁浩扬, 孙国雄. 金属学报, 2001; 37: 1035)
[4] Vieira E A, Junior B A O, Ferrante M. In: Alexandrou A, Apelian D, Georgiou G eds., Proc 8th Int Conf on Semi–solid Processing of Alloys and Composites, Limassol: University of Cyprus, 2004: 243
[5] Zoqui E J, PaeM, Es–Sadiqi E. J Mater Process Technol, 2002; 120: 365
[6] Liu Z, Mao W M, Zhao Z D. Chin J Mater Res, 2006; 20: 125
(刘政, 毛卫民, 赵振铎. 材料研究学报, 2006; 20: 125)
[7] Liu Z, Mao W M, Zhao Z D. Trans Nonferrous Met Soc China, 2006; 16(1): 7
[8] Stefanescu D M, Padhya G, Yopdhyay D B. Metall Trans, 1990; 21A: 998
[9] Li P J, Zeng D B, Jia J. Foundry, 19; 48(6): 10
(李培杰, 曾大本, 贾均. 铸造, 1999; 48(6): 10)
[10] Li T, Chen G, Lin X, Huang W D. Acta Metall Sin, 2006; 42: 577
(李涛, 陈光, 林鑫, 黄卫东. 金属学报, 2006; 42: 577)
[11] Huang W D, Li T, Lin X. In: Alexandrou A, Apelian D, Georgiou G eds., Proc 8th Int Conf on Semi–solid Processing of Alloys and Composites, Limassol: University of Cyprus, 2004: 199
[12] Wang H, Stjone D H, Davidson C J, Ning Z. In: Alexandrou A, Apelian D, Georgiou G eds., Proc 8th Int Conf on Semi–solid Processing of Alloys and Composites, Limassol: University of Cyprus, 2004: 269
[13] Zhang J X, Zhang K, Liu G J. Chin J Nonferrous Met, 200010: 511
(张景新, 张奎, 刘国钧. 中国有色金属学报, 2000; 10: 511)
[14] Zhen Z S, Mao W M, Chen H T, Zhong X Y. J Univ Sci Technol Beijing, 2003; 25: 341
(甄子胜, 毛卫民, 陈洪涛, 钟雪友. 北京科技大学学报, 2003; 25: 341)
[15] Ji S. J Mater Sci, 2003; 38: 1559
[16] Fan Z, Liu G, Hitchcock M. Mater Sci Eng, 2005; A413-414: 229
[17] Ji S, Fan Z. Metall Mater Trans, 2002; 33A: 3511
[18] Yurko J A, Martinez R A, Flemings M C. In: Yasukata T, Manabu K, Kiyoshi I eds., Proc 7th Int Conf on Semi–solid Processing of Alloys and Composites, Tsukuba, Japan, 2002: 659
[19] Liu Z, Mao W M, Zhao Z D. Chin Foundry, 2006; 3(2):102

[1]	ZHANG Lin, GUO Xiao, GAO Jianwen, DENG Anyuan, WANG Engang. Effect of Electromagnetic Stirring on Microstructure and Mechanical Properties of TiB₂ Particle-Reinforced Steel[J]. 金属学报, 2020, 56(9): 1239-1246.
[2]	REN Zhongming,LEI Zuosheng,LI Chuanjun,XUAN Weidong,ZHONG Yunbo,LI Xi. New Study and Development on Electromagnetic Field Technology in Metallurgical Processes[J]. 金属学报, 2020, 56(4): 583-600.
[3]	Guohua WU, Yushi CHEN, Wenjiang DING. Current Research and Future Prospect on Microstructures Controlling of High Performance Magnesium Alloys During Solidification[J]. 金属学报, 2018, 54(5): 637-646.
[4]	Zheng LIU,Lina XU,Zhaofu YU,Yangzheng CHEN. RESEARCH ON THE MORPHOLOGY AND FRACTALDIMENSION OF PRIMARY PHASE IN SEMISOLIDA356-La ALUMINUM ALLOY BY ELECTRO-MAGNETIC STIRRING[J]. 金属学报, 2016, 52(6): 698-706.
[5]	Zheng LIU,Jiayi ZHANG,Haolin LUO,Keyue DENG. RESEARCH ON MORPHOLOGY EVOLUTION OF PRIMARY PHASE IN SEMISOLID A356 ALLOY UNDER CHAOTIC ADVECTION[J]. 金属学报, 2016, 52(2): 177-183.
[6]	LIU Zheng, LIU Xiaomei, ZHU Tao, CHEN Qingchun. EFFECTS OF ELECTROMAGNETIC STIRRING WITH LOW CURRENT FREQUENCY ON RE DISTRIBUTION IN SEMISOLID ALUMINUM ALLOY[J]. 金属学报, 2015, 51(3): 272-280.
[7]	SU Zhijian LI Dewei SUN Liwei MARUKAWA Katsukiyo HE Jicheng. NUMERICAL SIMULATION OF SWIRLING FLOW IN IMMERSION NOZZLE INDUCED BY A ROTATING ELECTROMAGNETIC FIELD IN ROUND BILLET CONTINUOUS CASTING OF STEEL[J]. 金属学报, 2010, 46(4): 479-486.
[8]	YU Haiqi ZHU Miaoyong. 3-D NUMERICAL SIMULATION OF FLOW FIELD AND TEMPERATURE FIELD IN A ROUND BILLET CONTINUOUS CASTING MOLD WITH ELECTROMAGNETIC STIRRING[J]. 金属学报, 2008, 44(12): 1465-1473.
[9]	;. CALCULATION ON ELECTROMAGNETIC FORCE IN ELECTROMAGNETIC STIRRING OF CONTINUOUS CASTING OF STEEL[J]. 金属学报, 2006, 42(5): 540-544 .
[10]	JIN Junze; CAO Zhiqiang; ZHENG Xianshu; ZHANG Shangru(Dalian University of Technology; Dalian 116023)(Manuscript received 1994-06-10; in revised form 1995-03-15). FORMATION OF SEPARATED EUTECTIC PHENOMENON BY ELECTROMAGNETIC STIRRING[J]. 金属学报, 1995, 31(20): 374-378.
[11]	YANG Yuansheng; LIU Qingmin; JIAO Yuning; GE Yunlong; HU Zhuangqi(Institute of Metal Research;Chinese Academy of Sciences;Shenyang). FORCE FIELD ANALYSIS ON LIQUID METAL DURING ELECTROMAGNETIC CENTRIFUGAL SOLIDIFICATION[J]. 金属学报, 1994, 30(17): 208-212.
[12]	CAO Zhiqiang;ZHANG Liping;REN Zhongming;JIN Junze Dalian University of Technology. INFLUENCE OF ELECTROMAGNETIC STIRRING ON MACRO-SEGREGATION OF GREY CAST IRON[J]. 金属学报, 1992, 28(2): 82-85.
[13]	HU Hanqi;ZHENG Riqi University of Science and Technology Beijing professor;Faculty of Casting;University of Science and Technology Beijing;Beijing 100083. INFLUENCE OF ELECTROMAGNETIC STIRRING ON DENDRITIC STRUCTURE AND MECHANICAL PROPERTIES OF LOW SULPHUR STEEL[J]. 金属学报, 1990, 26(4): 83-86.

No Suggested Reading articles found!

Viewed

Full text

Abstract

Cited

Shared

Discussed