Fabrication of bulk UFG magnesium alloys by cyclic extrusion compression

被引：24

作者：

Chen, Yongjun ^{[1
]}

Wang, Qudong ^{[1
]}

Lin, Jinbao ^{[1
]}

Zhang, Lujun ^{[1
]}

Zhai, Chunquan ^{[1
]}

机构：

[1] Shanghai Jiao Tong Univ, Light Alloy Net Forming Natl Engn Res Ctr, Shanghai 200030, Peoples R China

来源：

JOURNAL OF MATERIALS SCIENCE | 2007年 / 42卷 / 17期

关键词：

D O I：

10.1007/s10853-007-1889-y

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A study was conducted to demonstrate the fabrication of UFG magnesium alloys by cyclic extrusion compression (CEC) method and examine the grain refinement mechanism. The CEC extrusion method was a combination of alternating extrusion and compression cycles, with the extruder consisting of two rams and one cylindrical die that were made of H13 steel. The CEC processing operation involved two steps, such as the first step that involved the sample being placed into the upper chamber and was pushed by the ram, to pass through the chamber with smaller diameter, while the second step involved the second ram to be reversed to push the sample, to flow into upper chamber, through the smaller. This deformation cycle was repeated so that unlimited true strain can be obtained. The opposite was also removed and the magnitude of the cumulated true strain was observed to be approximated, for the final extrusion process of UFG magnesium alloys.

引用

页码：7601 / 7603

页数：3

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