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
AZ31镁合金小直径薄壁管拉拔工艺及性能研究
英文标题:Research on drawing process and properties of AZ31 magnesium alloy tube with minor diameter and thin wall
作者:李毓英 
单位:抚顺职业技术学院 
关键词:AZ31镁合金 薄壁管 拉拔 晶粒细化 
分类号:TG356.51
出版年,卷(期):页码:2015,40(5):59-62
摘要:
实验研究了多道次拉拔过程中拉拔速度、拉拔变形量对AZ31镁合金小直径薄壁管材组织和性能的影响。研究结果表明,温度为300 ℃、拉拔速度为0.30 mm·s-1时,管材壁厚减薄均匀,可以保证镁合金管材的拉拔顺利进行。多道次拉拔可以成功制备Φ4 mm×0.2 mm的AZ31镁合金小直径薄壁管材。且随着累计变形程度的增加,镁合金的晶粒显著细化,当累积变形量达到95.4%时,平均晶粒尺寸从开始的22 μm减小到8 μm左右。 最终小直径薄壁镁合金管材的抗拉强度达到了247.3 MPa,相应的伸长率为16.8%。
The influences of drawing speeds and drawing deformation on microstructure and properties of AZ31 magnesium alloy tube with minor diameter and thin wall were studied experimentally. Research results indicate that the reduction of wall thickness is even and the drawing process can be carried out successfully at 300 ℃ and drawing velocity of 0.30 mm·s-1. The tube of Φ4 mm×0.2 mm can be obtained successfully via multiple passes of drawing. With the increase of accumulated plastic deformation, grains of the magnesium alloy tube are refined remarkably. When the accumulated plastic strain reaches 95.4%,the average grain size decreases from initial 22 μm to  about 8 μm,and the final tensile strength and relative elongation of tube can reach 247.3 MPa and 16.8% respectively.
 
基金项目:
国家自然科学基金资助项目(05971092)
作者简介:
李毓英(1981-),女,硕士,讲师
参考文献:


[1]李伟.生物可降解稀土镁合金血管支架无缝管材的制备技术及性能研究[D].重庆:重庆大学,2011.Li W. Preparation Technology and Propertiesof Mg-Re Alloy Seamless Tube as Biodegradable Stent[D]. Chongqing: Chongqing University,2011.
[2]Lim S S, Gaziano T A, Gakidou E, et al. Prevention of cardiovascular disease in high-risk individuals in low-income and middle-income countries: Health effect sand costs[J]. The Lancet, 2007, 370: 2054-2062.
[3]王忠堂, 张士宏, 莫立华,等.镁合金管材挤压工艺及组织性能研究[J].锻压机械,2002,(1): 60-62.Wang Z T, Zhang S H, Mo L H, et al. Study on technology and microstructure performance in tube extrusion of Mg alloy[J]. Metalforming Machinery, 2002,(1): 60-62.
[4]Fang G,A W J,Lee Flang M A. Experimental and numerical investigations into extrusion to produce thin-walled seamless tubes for vascular stents[A]. Proceeding of the 10th International Conferences of Technology on Plasticity(ICTP 2011) [C].Aachen,Germanny, 2011.
[5]李强,张超逸,花福安,等.三辊轧制镁合金薄壁管成形工艺及微观组织[J].沈阳工业大学学报,2013,35(4):407-413.Li Q, Zhang C Y, Hua F A, et al. Forming process and microstructure of three-roller rolled magnesium alloy thin-wall pipe [J].Journal of Shenyang University of Technology,2013,35(4):407-413.
[6]方刚,闫凯民,曾攀,等.镁合金微细管热挤压-冷拉拔工艺[J].塑性工程学报,2013,20(5):11-15.Fang G, Yan K M,Zeng P, et al. Research on hot extrusion and cold drawing for micro-tube of magnesium alloys[J]. Journal of Plasticity Engineering, 2013,20(5):11-15.
[7]杨树恒. 挤压AZ31镁合金管材的组织性能及热塑性研究[J].锻压技术,2013,38(4):140-143.Yang S H. Microstructure and thermal plasticity of AZ31 magnesium alloy extruded tube[J].Forging & Stamping Technology, 2013,38(4):140-143.
[8]汪凌云,黄光胜,范永革,等.变形AZ31镁合金的晶粒细[J]. 中国有色金属学报,2003,13(3):594-598.Wang L Y, Huang G S, Fan Y G, et al.Grain refinement of wrought AZ31 magnesium alloy[J]. Transactions of Nonferrous Metals Society of China, 2003,13(3):594-598.

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