网站首页期刊简介编委会过刊目录投稿指南广告合作征订与发行联系我们English
Zn含量对7XXX铝合金性能及微观组织影响
英文标题:Influence of Zn contents on properties and microstructure of aluminum alloy 7XXX
作者:唐仁奎 
单位:重庆科创职业学院 
关键词:7XXX铝合金 模铸 微观组织 Zn含量 流动性 
分类号:TG113
出版年,卷(期):页码:2017,42(4):184-187
摘要:

为了深入研究7XXX铝合金的成分对材料性能的影响,对通过模铸工艺制备的高锌含量的铝基合金性能和微观组织进行了研究,重点探讨了Zn含量对合金组织、性能和铸造流动性的影响。研究结果表明,当Zn含量从20%增加到40%时:对材料组织的影响主要表现为晶粒尺寸由45 μm减小到20 μm,晶界处非平衡相α+η的体积分数由9%增加到28%;对力学性能的影响表现为抗拉强度与屈服强度升高,分别达到470 MPa和430 MPa,伸长率有所降低,从7%降低至3%左右,合金硬度值由75 HV提高至140 HV。同时,Zn含量的增加可以降低合金固相线温度,这有利于提高合金的流动性。

In order to further study the influence of composition of aluminum alloy 7XXX on material performance, the performance and microstructure of Al-based alloys with high content of Zn produced by mold casting were researched, and the influence of Zn content on the microstructure, mechanical properties and casting fluidity were studied. The results show that when the content of Zn increases from 20% to 40%, the influences on microstructure are that the average grain size decreases from 45 μm to about 20 μm, and the non-equilibrium phase α+η volume fraction at the grain boundary increases from 9% to 28%. Moreover, the influences on mechanical properties are that the tensile strength and yield strength increase to 470 MPa and 430 MPa respectively, the elongation decreases from 7% to 3%, and the alloy hardness value improves from 75 HV up to 140 HV. At the same time, the increase of Zn content can reduce the solidus temperature of alloy, and the fluidity of alloy is improved.

基金项目:
作者简介:
唐仁奎(1974-),男,硕士,讲师 E-mail:tangrk1@163.com
参考文献:

[1]郑晖,赵曦雅. 汽车轻量化及铝合金在现代汽车生产中的应用[J]. 锻压技术,2016412):1-5.


Zheng HZhao X Y. Lightweight automobile and application of aluminum alloys in modern automobile production [J]. Forging & Stamping Technology2016412):1-5.


[2]潘复生,张丁非.铝合金及应用[M].北京:化学工业出版社,2006.


Pan F S, Zhang D F. Aluminum Alloy and Application[M]. Beijing: Chemical Industry Press, 2006.


[3]赵晓东,王亮,喻征,等. Al-Zn-Mg-Cu高强铝合金等温多向自由锻组织性能研究[J]. 锻压技术,2015409):1-6.


Zhao X DWang LYu Zet al. Research on microstructure and properties of high strength aluminum alloy Al-Zn-Mg-Cu in isothermal multi-axial open-die forging [J]. Forging & Stamping Technology2015409):1-6.


[4]栗丽,李焕喜,周铁涛,等. ZnNi元素对喷射成形铝合金组织特征和时效行为的影响[J]. 稀有金属, 2005, 29(3): 368-370.


Li L, Li H X, Zhou T T, et al. Effect of Zn and Ni on microstructure and aging behavior of Al-Zn-Mg-Cu alloys from spray forming [J]. Chinese Journal of Rare Metals, 2005, 29(3): 368-370.


[5]刘浩,肖铁忠,黄娟,等. 第二级固溶温度对7050铝合金组织和性能的影响[J]. 锻压技术,2016416):142-145.


Liu HXiao T ZHuang Jet al. Influence of the second stage solution temperature on microstructure and properties of aluminum alloy 7050 [J]. Forging & Stamping Technology2016416):142-145.


[6]熊柏青,李锡武,张永安, . 高强韧低淬火敏感性7XXX 系〖JP〗铝合金的发展[J]. 中国材料进展, 2014, 33(2): 114-119.


Xiong B Q, Li X W, Zhang Y A, et al. Development of 7XXX series aluminum alloy with high strength high toughness and low quench sensitivity[J]. Materials China, 2014, 33(2):114-119.


[7]Bai P C, Hou X H,  Zhang X Y, et al. Microstructure and mechanical properties of a large billet of spray formed Al-Zn-Mg-Cu alloy with high Zn content[J]. Materials Science & Engineering A, 2009, 508 (1-2): 23-27.


[8]Li R X, Li R D, Bai Y H. Effect of specific pressure on microstructure and mechanical properties of squeeze casting ZA27 alloy[J]. Transactions of Nonferrous Metals Society of China, 2010,20(1): 59-63.


[9]Alemdag Y, Savaskan T. Mechanical and tribological properties of Al-40Zn-Cu alloys[J]. Tribology International, 2009, 42(1): 176-182.


[10]Savaskan T, Alemdag Y. Effect of nickel additions on the mechanical and sliding wear properties of Al-40Zn-3Cu alloy [J]. Wear,2010, 268(3-4): 565-570.

服务与反馈:
本网站尚未开通全文下载服务】【加入收藏
《锻压技术》编辑部版权所有

中国机械工业联合会主管 北京机电研究所有限公司 中国机械工程学会塑性工程分会主办
联系地址:北京市海淀区学清路18号 邮编:100083
电话:+86-010-82415085 传真:+86-010-62920652
E-mail: fst@263.net(稿件) dyjsjournal@163.com(广告)
京ICP备07007000号-9