Processing map for hot working of as extruded AZ31B magnesium alloy

被引：0

作者：

黄光胜

黄光杰

汪凌云

潘复生

机构：

[1] College of Materials Science and Engineering

[2] Chongqing University

[3] Chongqing University Chongqing

[4] China

[5] Chongqing

来源：

Transactions of Nonferrous Metals Society of China | 2005年 / 04期

关键词：

magnesium alloy; AZ31B; processing map; hot deformation; flow instability;

D O I：

暂无

中图分类号：

TG376 [挤压工艺];

学科分类号：

080201 ; 080503 ;

摘要：

The deformation behavior of AZ31B magnesium alloy as extruded under hot compression conditions was characterized in the temperature range of 200400℃ and strain rate range of 0.0011s-1. The processing maps were obtained at different strains. The results show that the map exhibits flow instabilities as two domains. The domain at beyond 300℃ and strain rate of 1s-1 appears with a peak efficiency of power dissipation about 56% occurring. This domain is expected to happen in a hot process, such as hot rolling, hot extrusion and hot forging. There is high efficiency of power dissipation at temperature beyond 350℃ and strain rate 0.001s-1.Such domains suggest the occurrence of superplastic deformation.

引用

页码：813 / 817

页数：5

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