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Effect of strontium on primary dendrite and eutectic temperature of A357 aluminum alloy 被引量：3

Effect of strontium on primary dendrite and eutectic temperature of A357 aluminum alloy
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摘要 Solidification process of A357 alloy with Sr addition was investigated in this paper.In particular,the effects of strontium and cooling rate on α-Al dendrite and Al-Si eutectic characteristic temperature were characterized by differential thermal analysis(DTA).Sr addition not only modifies the Al-Si eutectic,but also affects the morphology and structure of primary α-Al dendrite.Sr decreases the growth temperature of α-Al dendrite and Al-Si eutectic,and it also affects the dendrite growth mechanism.It has been found that such effect becomes more significant with higher cooling rate. Solidification process of A357 alloy with Sr addition was investigated in this paper.In particular,the effects of strontium and cooling rate on α-Al dendrite and Al-Si eutectic characteristic temperature were characterized by differential thermal analysis（DTA）.Sr addition not only modifies the Al-Si eutectic,but also affects the morphology and structure of primary α-Al dendrite.Sr decreases the growth temperature of α-Al dendrite and Al-Si eutectic,and it also affects the dendrite growth mechanism.It has been found that such effect becomes more significant with higher cooling rate.
作者 Chen Zhongwei Zhang Ruijie
机构地区 State Key Laboratory of Solidification Processing Faculty of Life Science
出处 《China Foundry》 SCIE CAS 2010年第2期149-152,共4页 中国铸造（英文版）
基金 supported by the Natural Science Fund of Shanxi Province (No. SJ08-ZT05) Open Research Fund of Shenzhen Key Laboratory of Special Functional Materials,Shenzhen University (No. 2T0804)
关键词 solidification differential thermal analysis（DTA） A357 aluminium alloy strontium modification
分类号 TG146.21 [金属学及工艺—金属材料]
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参考文献14

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同被引文献18

  • 1李建峰,李金山,寇宏超,陈忠伟,胡锐,王一川,傅恒志,周廉.熔体处理对A357合金枝晶搭接点的影响[J].中国有色金属学报,2006,16(3):470-475. 被引量：6
  • 2程仁菊,潘复生,王维青.Al-Sr中间合金制备及应用的发展现状[J].轻合金加工技术,2006,34(7):5-11. 被引量：10
  • 3谭群燕,王燕红.铝合金熔体处理技术[J].热加工工艺,2007,36(17):65-67. 被引量：21
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  • 5LI Q, HA() Q, JIE W, et al. Effect of fuzzy PID inlet parameters on control precision of molten pressurisation of low pressure casting [J]. International Journal of Cast Metals Research, 2011, 24(6) : 347-350.
  • 6MA X L, WANG H W, ZENG S Y. Effects of cooling rate on mi- crostrueture and mechanical properties of A357 alloy during differ- ential pressure casting process r J3. Transactions of Nonferrous Metals Society of China, 2005,15(1) : 128-131.
  • 7PRABHU K N, HEGDE S. Effect of modification melt treatment and chilling on eutectic arrest temperature and time during solidifi- cation of A357 alloy[J]. Materials Science and Technology, 2011, 27(8): 1 353-1 356.
  • 8ALEXOPOULOS N D, PANTELAKIS S G. Quality evaluation of A357 cast aluminum alloy specimens subjected to different arti- ficial aging treatment[J]. Materials and Design, 2004, 25(5):419-430.
  • 9ES-SAID Q S, LEED, PFOST WD, et al. Alternative heat treat- ments for A357-T6 aluminium alloy[J]. Engineering Failure A- nalysis, 2002,9(1) : 99-107.
  • 10COLLEY L J. Microstructure-preperty Models for Heat Treament of A356 Aluminum Alloy[D]. Vancouver: The University of British Columbia, 2011.

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China Foundry
2010年 第2期

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