期刊文献+
共找到2篇文章
< 1 >
每页显示 20 50 100
Effect of bending and tension deformation on the texture evolution and stretch formability of Mg-Zn-RE-Zr alloy 被引量:2
1
作者 Yuya Ishiguro Xinsheng Huang +2 位作者 Yuhki Tsukada Toshiyuki Koyama Yasumasa Chino 《International Journal of Minerals,Metallurgy and Materials》 SCIE EI CAS CSCD 2022年第7期1334-1342,共9页
Bending and tension deformations were performed on Mg-1.3 wt%Zn-0.2 wt%RE-0.3 wt%Zr(ZEK100)alloy sheets that initially had a transverse direction(TD)-split texture.The effects of bending and tension deformations on th... Bending and tension deformations were performed on Mg-1.3 wt%Zn-0.2 wt%RE-0.3 wt%Zr(ZEK100)alloy sheets that initially had a transverse direction(TD)-split texture.The effects of bending and tension deformations on the texture formation and room-temperature formability of specimens were investigated.The specimen subjected to 3-pass bending and tension deformations exhibited an excellent Erichsen value of 9.6 mm.However,the Erichsen value deterioration was observed in the specimen subjected to 7-pass deformations.The rolling direction-split texture developed on the surface with an increasing pass number of deformations.Conversely,the clear TD-split texture remained at the central part.As a result,a quadrupole texture was macroscopically developed with an increasing pass number of deformations.The reduction in anisotropy by the formation of the quadrupole texture is suggested to be the main reason for the improvement in stretch formability.By contrast,the generation of coarse grains near the surface is suggested to be the direct cause for the deterioration of the stretch formability of the specimen subjected to 7-pass deformations. 展开更多
关键词 magnesium alloy texture stretch formability bending and tension deformation mechanical properties
下载PDF
Evaluation of Contact Pressure in Bending under Tension Test by a Pressure Sensitive Film
2
作者 Luis Fernando Folle Lirio Schaeffer 《Journal of Surface Engineered Materials and Advanced Technology》 2016年第4期201-214,共15页
The contact pressure acting on the sheet/tools interface has been studied because of growing the concern about the wear of tools. Recent studies make use of numerical simulation software to evaluate and correlate this... The contact pressure acting on the sheet/tools interface has been studied because of growing the concern about the wear of tools. Recent studies make use of numerical simulation software to evaluate and correlate this pressure with the friction and wear generated. Since there are many studies that determine the coefficient of friction in sheet metal forming by bending under tension (BUT) test, the contact pressure between the pin and the sheet was measured using a film that has the ability to record the applied pressure. The vertical force applied to pin was also measured. The results indicate that the vertical force is more accurate to set the contact pressure that using equations predetermined. It was also observed that the contact area between the sheet and the pin is always smaller than the area calculated geometrically. The friction coefficient was determined for the BUT test through several equations proposed by various authors in order to check if there is much variation between the results. It was observed that the friction coefficient showed little variation for each equation, and each one can be used. The material used was the commercially pure aluminum, alloy Al1100. 展开更多
关键词 Coefficient of Friction Sheet Metal Forming Process bending under tension Test Contact Pressure Technology Applied to Design
下载PDF
上一页 1 下一页 到第
使用帮助 返回顶部