Fracture mechanism and forming limit in deep-drawing of magnesium alloy AZ31

被引：30

作者：

Kohzu, M ^{[1
]}

Yoshida, F

Somekawa, H

Yoshikawa, M

Tanabe, S

Higashi, K

机构：

[1] Univ Osaka Prefecture, Coll Engn, Dept Met & Mat Sci, Sakai, Osaka 5998531, Japan

[2] Hiroshima Univ, Coll Engn, Dept Mech Engn, Higashihiroshima 7390006, Japan

来源：

MATERIALS TRANSACTIONS | 2001年 / 42卷 / 07期

关键词：

magnesium alloy; fracture mechanism; forming limit; rolled sheet; deep-drawing; punch radius; stretch-bending; room temperature; local elongation;

D O I：

10.2320/matertrans.42.1273

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

A fracture mechanism and forming limit in cylindrical deep-drawing below 473 K was investigated for commercially rolled sheet of magnesium alloy AZ31. A small punch radius, of which the ratio to thickness was 2.5, was adopted intentionally. At room temperature, a brittle fracture under a very small punch load occurred at an early stage on the punch shoulder near the bottom. It was confirmed by stretch bending tests that the fracture was caused by bending under high tension, which deeply concerned with high yield stress and little local elongation of this material. The forming limit was dominated by this mechanism up to 453 K in semi-static drawing.

引用

页码：1273 / 1276

页数：4

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