等通道转角变形对铸态3003铝合金夹杂物的影响

材料科学与工程学报, 2011, 29(1): 103-107.

等通道转角变形对铸态3003铝合金夹杂物的影响

王彬 ^1, , 许晓静 ^2, , 吴桂潮 ^3, , 张福豹 ^4, , 赵梓皓 ^5, , 房士义 ^6, , 潘励 ^7, , 张增雷 ^8,

1.江苏大学先进成形技术研究所,江苏,镇江,212013

2.江苏大学先进成形技术研究所,江苏,镇江,212013

3.江苏大学先进成形技术研究所,江苏,镇江,212013

4.江苏大学先进成形技术研究所,江苏,镇江,212013

5.江苏大学先进成形技术研究所,江苏,镇江,212013

6.江苏大学先进成形技术研究所,江苏,镇江,212013

7.江苏大学先进成形技术研究所,江苏,镇江,212013

8.江苏大学先进成形技术研究所,江苏,镇江,212013

基金项目: 江苏省自然科学基金重点资助项目(BK2007707) 江苏大学优秀学术青年骨干培养对象基金资助项目(1211110001) 教育部留学回国人员科研启动基金资助项目(2006-331)

关键词：铝合金 , 夹杂物 , 等通道转角变形加工

Effect of Equal Channel Angular Pressing on Inclusions of 3003Al Ingot

本文在室温下对铸态3003铝合金实施了道次等效应变约为0.5的等通道转角变形(Equal-channel angular pressing-ECAP),对其夹杂物的碎化、分布和合金的硬度进行了考察.结果表明,第1道次的ECAP加工将合金内部的粗大(长5-15μm、宽1-2μm)且几乎呈连续分布的夹杂物(AlFe (Mn)Si)折断碎化(长1-3μm)并初步分散开,引入大量位错至合金中,提高硬度幅度达66.7%.后续的2-4道ECAP加工将夹杂物分散均匀,但对夹杂物的碎化和硬度影响很小.本文的试验结果说明了ECAP作为一种细化铝合金内部AlFe(Mn)Si夹杂物并使之分布均匀的工艺方法的可行性.

参考文献

[1]	Valiev RZ.;Alexandrov IV.;Islamgaliev RK. .Bulk nanostructured materials from severe plastic deformation [Review][J].Progress in materials science,2000(2):103-189.
[2]	Ruslan Z. Valiev;Terence G. Langdon .Principles of equal-channel angular pressing as a processing tool for grain refinement[J].Progress in materials science,2006(7):881-981.
[3]	Terence G. Langdon .The principles of grain refinement in equal-channel angular pressing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2007(1/2):3-11.
[4]	Y.H. Zhao;X.Z. Liao;Z. Jin .Micro structures and mechanical properties of ultrafine grained 7075 Al alloy processed by ECAP and their evolutions during annealing[J].Acta materialia,2004(15):4589-4599.
[5]	J.R. Bowen;P.B. Prangnell;D. Juul Jensen;N. Hansen .Microstructural parameters and flow stress in Al-0.13% Mg deformed by ECAE processing[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(0):235-239.
[6]	Segal VM .Equal channel angular extrusion of flat products[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2008(1/2):178-185.
[7]	V.M. Segal .Engineering and commercialization of equal channel angular extrusion (ECAE)[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2004(1/2):269-276.
[8]	XU Xiao-jing,GAO Jin-qi,CHENG Xiao-nong,MO Ji-ping.Tensile properties of 2024 Al alloy processed by enhanced solid-solution and equal-channel angular pressing[J].中国有色金属学会会刊（英文版）,2006(z3):1541-1544.
[9]	路君,靳丽,董杰,曾小勤,丁文江,姚真裔.等通道角挤压变形AZ31镁合金的变形行为[J].中国有色金属学报,2009(03):424-432.
[10]	Ferrasse, S;Segal, VM;Alford, F;Kardokus, J;Strothers, S .Scale up and application of equal-channel angular extrusion for the electronics and aerospace industries[J].Materials Science and Engineering. A, Structural Materials: Properties, Microstructure and Processing,2008(1/2):130-140.
[11]	P.K. Chaudhury;B. Cherukuri;R. Srinivasan .Scaling up of equal-channel angular pressing and its effect on mechanical properties, microstructure, and hot workability of AA 6061[J].Materials Science & Engineering, A. Structural Materials: Properties, Misrostructure and Processing,2005(0):316-318.
[12]	XU Xiao-jing,GAO Jin-qi,CHENG Xiao-nong,MO Ji-ping.Tensile properties of 2024 Al alloy processed by enhanced solid-solution and equal-channel angular pressing[J].中国有色金属学会会刊（英文版）,2006(z3):1541-1544.
[13]	K.M. Youssef;R.O. Scattergood;K.L. Murty .Nanocrystalline Al-Mg Alloy with Ultrahigh Strength and Good Ductility[J].Scripta materialia,2006(2):251-256.
[14]	Y.H. Zhao;X.Z. Liao;Z. Jin .Micro structures and mechanical properties of ultrafine grained 7075 Al alloy processed by ECAP and their evolutions during annealing[J].Acta materialia,2004(15):4589-4599.

上一张下一张

计量

下载量()
访问量()

作者相关

文章评分

您的评分：
1

0%
2

0%
3

0%
4

0%
5

0%

材料期刊网