Stress triaxiality effect on fracture behavior of IMI-834 titanium alloy: A micromechanics approach

被引：24

作者：

Kumar, Jalaj ^{[1
]}

Srivathsa, B. ^{[1
]}

Kumar, Vikas ^{[1
]}

机构：

[1] Def Met Res Lab, Hyderabad 500058, Andhra Pradesh, India

来源：

MATERIALS & DESIGN | 2009年 / 30卷 / 04期

关键词：

Non-ferrous alloy; Fracture; DAMAGE MECHANISMS; DUCTILE FRACTURE; CRITERION; MICROSTRUCTURE; GROWTH;

D O I：

10.1016/j.matdes.2008.06.044

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In the present work, Rice-Tracey model has been explored to analyze the integrity of a near-alpha IMI-834 titanium alloy. In order to simulate the varying state of stress triaxiality at component level, axi-symmetrically notched round bars with constraint factors ranging from 0.5-2.5; models of tensile specimens created in ANSYS were used. The FEA simulations have been found to be in good agreement with experimental results. Fracture stresses predicted by FEA simulation are in good agreement with the experimentally determined values. Marginal discrepancy in the high constraint regime may be attributed to the presence of complex fracture micro-mechanisms in titanium alloys. (C) 2008 Elsevier Ltd. All rights reserved.

引用

页码：1118 / 1123

页数：6

共 16 条

[1]

[Anonymous], PHENOMENOLOGICAL ASP

[2]

[Anonymous], T ASME

[3]

[Anonymous], J I METALS

[4] INTERRELATIONSHIP OF FRACTURE TOUGHNESS AND MICROSTRUCTURE IN A TI-5.25AL-5.5V-0.9FE-0.5CU ALLOY [J].

GREENFIELD, MA ;

MARGOLIN, H .

METALLURGICAL TRANSACTIONS, 1971, 2 (03) :841-+

[5] MECHANISMS OF DUCTILE FAILURE IN HIGH-STRENGTH STEELS SUBJECTED TO MULTI-AXIAL STRESS STATES [J].

HANCOCK, JW ;

MACKENZIE, AC .

JOURNAL OF THE MECHANICS AND PHYSICS OF SOLIDS, 1976, 24 (2-3) :147-&

[6] The influence of stress triaxiality on the damage mechanisms in an equiaxed alpha/beta Ti-6Al-4V alloy [J].

Helbert, AL ;

Feaugas, X ;

Clavel, M .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (10) :3043-3058

[7] Effects of microstructural parameters and back stress on damage mechanisms in α/β titanium alloys [J].

Helbert, AL ;

Feaugas, X ;

Clavel, M .

ACTA MATERIALIA, 1998, 46 (03) :939-951

[8]

Kachanov LM, 1999, INT J FRACTURE, V97, pXI

[9] LOCAL APPROACH OF FRACTURE [J].

LEMAITRE, J .

ENGINEERING FRACTURE MECHANICS, 1986, 25 (5-6) :523-537

[10] A CRITERION FOR DUCTILE FRACTURE BY GROWTH OF HOLES [J].

MCCLINTOCK, FA .

JOURNAL OF APPLIED MECHANICS, 1968, 35 (02) :363-+

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