Effect of grain refinement on fracture toughness in extruded pure magnesium

被引：181

作者：

Somekawa, H ^{[1
]}

Mukai, T ^{[1
]}

机构：

[1] Natl Inst Mat Sci, Ecomat Ctr, Tsukuba, Ibaraki 3050047, Japan

来源：

SCRIPTA MATERIALIA | 2005年 / 53卷 / 09期

关键词：

toughness; magnesium; extrusion; grain refining; stretched zone;

D O I：

10.1016/j.scriptamat.2005.07.001

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The fracture toughness of extruded pure magnesium increased with grain refinement due to the effect of the plastic zone, which is a sensitive factor related to the mechanical properties of yield strength, elongation-to-failure and strain hardening exponent. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：1059 / 1064

页数：6

共 29 条

[1] Enhanced ductility in strongly textured magnesium produced by equal channel angular processing [J].

Agnew, SR ;

Horton, JA ;

Lillo, TM ;

Brown, DW .

SCRIPTA MATERIALIA, 2004, 50 (03) :377-381

[2] PLASTIC DEFORMATION OF POLYCRYSTALLINE AGGREGATES [J].

ARMSTRONG, R ;

DOUTHWAITE, RM ;

CODD, I ;

PETCH, NJ .

PHILOSOPHICAL MAGAZINE, 1962, 7 (73) :45-&

[3]

ASTM, ASTM E399

[4] Evaluation of the KIC and JIC fracture parameters in a sand cast AZ91 magnesium alloy [J].

Barbagallo, S ;

Cerri, E .

ENGINEERING FAILURE ANALYSIS, 2004, 11 (01) :127-140

[5]

Baskes M. I., 1974, Engineering Fracture Mechanics, V6, P11, DOI 10.1016/0013-7944(74)90043-5

[6] NEW TECHNIQUE FOR EXAMINING MICROSCOPIC FRACTURE PROCESSES AT CRACK TIPS [J].

BEACHEM, CD ;

LUPTON, TC ;

BROWN, BF .

METALLURGICAL TRANSACTIONS, 1971, 2 (01) :141-&

[7] SIZE OF PLASTIC REGION OWING TO BLUNTING OF THE PRECRACK TIP AND JIC VALUE IN SEVERAL TYPES OF STRUCTURAL-STEELS [J].

FUJITA, H ;

KAMIYA, O ;

TANAKA, M .

JOURNAL OF MATERIALS SCIENCE, 1982, 17 (12) :3541-3548

[8]

Hahn G.T., 1968, Application Related Phenomena in Titanium Alloys, V432, P5

[9]

HIGASHI K, 1985, J JPN I LIGHT METALS, V35, P520, DOI DOI 10.2464/JILM.35.520

[10] Deformation mechanism of nanocrystalline magnesium in compression [J].

Hwang, S ;

Nishimura, C ;

McCormick, PG .

SCRIPTA MATERIALIA, 2001, 44 (8-9) :1507-1511

← 1 2 3 →