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OALib Journal期刊
ISSN: 2333-9721
费用：99美元
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铝合金挤压铸造过程微观孔洞形成的建模与仿真
DOI: 10.3724/SP.J.1037.2010.00313, PP. 7-16
Keywords: 铝合金,挤压铸造,微观孔洞,建模与仿真
Abstract:
基于挤压铸造过程微观孔洞的形成机理,建立了模拟铝合金挤压铸造过程微观孔洞的数学模型.该模型考虑了传热、凝固收缩、补缩流动、压力传递、氢(H)的再分配等因素,通过计算凝固收缩导致的补缩流动与压力降低,以及挤压过程的压力传递,获得挤压铸造过程糊状区的压力分布,结合微观孔洞形成条件及H的守恒方程,计算微观孔洞的体积分数.对不同工艺条件下铝合金挤压铸造微观孔洞进行了模拟计算,计算结果与实验结果基本吻合.计算结果还表明,适当提高模具温度和挤压压力有利于减少微观孔洞缺陷.
| [1] | Ghomashchi M R, Vikhrov A. J Mater Process Technol, 2000; 101: 1
|
| [2] | Qi P X. Spec Cast Nonferrous Alloys, 1998; 18(4): 32
|
| [3] | (齐丕骧. 特种铸造及有色合金, 1998; 18(4): 32)
|
| [4] | Luo S J, Chen B G, Qi P X. Liquid Forging and Squeeze Casting Technology. Beijing: Chemical Industry Press, 2007: 1
|
| [5] | (罗守靖, 陈炳光, 齐丕骧. 液态模锻与挤压铸造技术. 北京: 化学工业出版社, 2007: 1)
|
| [6] | Major J F. AFS Trans, 1998; 105: 901
|
| [7] | Samuel A M, Samuel F H. Metall Mater Trans, 1995; 26A: 2359
|
| [8] | Lee C D. Mater Sci Eng, 2007; A464: 249
|
| [9] | Lee P D, Chirazi A, See D. J Light Met, 2001; (1): 15
|
| [10] | Stefanescu D M. Int J Cast Met Res, 2005; 18(3): 129
|
| [11] | Gui Z L, Dai T, Zhu M F. Spec Cast Nonferrous Alloys, 2007; 27: 766
|
| [12] | (桂仲林, 戴挺, 朱鸣芳. 特种铸造及有色合金, 2007; 27: 766)
|
| [13] | Kubo K, Pehlke R D. Metall Trans, 1985; 16B: 359
|
| [14] | Poirier D R, Yeum K, Maples A L. Metall Trans, 1987; 18A: 1979
|
| [15] | Shivkumar S, Apelian D, Zou J. AFS Trans, 1990; 98: 897
|
| [16] | Sabau A S, Viswanathan S. Metall Mater Trans, 2002; 33B: 243
|
| [17] | Pequet C H, Gremaud M, Rappaz M. Metall Mater Trans, 2002; 33A: 2095
|
| [18] | Zhao H D, Wu C Z, Li Y Y, Ohnaka I. Acta Metall Sin, 2008; 44: 1340
|
| [19] | (赵海东, 吴朝忠, 李元元, 大中逸雄. 金属学报, 2008; 44: 1340)
|
| [20] | Atwood R C, Sridhar S, Zhang W, Lee P D. Acta Mater, 2000; 48: 405
|
| [21] | Lee P D, Chirazi A, Atwood R C, Wang W. Mater Sci Eng, 2004; A365: 57
|
| [22] | Wang J S, Lee P D. Int J Cast Met Res, 2007; 20(3): 151
|
| [23] | Backer G, Wang Q G. Metall Mater Trans, 2007; 38B: 533
|
| [24] | Carlson K D, Lin Z P, Beckermann C. Metall Mater Trans, 2007; 38B: 541
|
| [25] | Han Z Q, Zhu W, Liu B C. Acta Metall Sin, 2009; 45: 356
|
| [26] | (韩志强, 朱维, 柳百成. 金属学报, 2009 45: 356)
|
| [27] | Zhu W, Han Z Q, Liu B C. Acta Metall Sin, 2009 45: 363
|
| [28] | (朱维, 韩志强, 柳百成. 金属学报, 2009; 45: 363)
|
| [29] | Anyalebechi P N. Acta Metall, 1995; 33: 1209
|
| [30] | Lewis R W, Han Z Q, Gethin D T. C R Mec, 2007: 335: 287
|
| [31] | Yang W, Li J X, Han Z Q, Zhao H D, Liu B C. Spec Cast Nonferrous Alloys, 2010; 30: 54
|
| [32] | (杨文, 李金玺, 韩志强, 赵海东, 柳百成. 特种铸造及有色合金, 2010; 30: 54)
|
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