Relationship between fracture toughness, fracture path, and microstructure of 7050 aluminum alloy: Part I. Quantitative characterization

被引：130

作者：

Deshpande, NU ^{[1
]}

Gokhale, AM

Denzer, DK

Liu, J

机构：

[1] Cessna Aircraft Co, Wichita, KS 67277 USA

[2] Georgia Inst Technol, Sch Mat Sci & Engn, Atlanta, GA 30332 USA

[3] Alcoa Tech Ctr, Alcoa Center, PA 15069 USA

来源：

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1998年 / 29卷 / 04期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1007/s11661-998-0246-3

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The fracture toughness of Al-Zn-Mg-Cu-based 7XXX aluminum alloys decreases with an increase in the extent of recrystallization. In this contribution, the fracture path of plane-strain fracture-toughness specimens of 7050 alloy (a typical alloy of the 7XXX series) is quantitatively characterized as a function of degree of recrystallization, specimen orientation, and aging condition. The fracture path is quantitatively correlated to fracture toughness, and the bulk microstructural attributes estimated via stereological analysis. In the companion article, these quantitative data are used to develop and verify a multiple-fracture micromechanism-based model that relates the fracture toughness to a number of microstructural parameters of the partially recrystallized alloy plate.

引用

页码：1191 / 1201

页数：11

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