Investigation of the Tensile Shear fracture of Advanced High Strength Steel spot welds

被引：41

作者：

Dancette, S. ^{[1
]}

Fabregue, D. ^{[1
]}

Massardier, V. ^{[1
]}

Merlin, J. ^{[1
]}

Dupuy, T. ^{[2
]}

Bouzekri, M. ^{[2
]}

机构：

[1] Univ Lyon, INSA Lyon, MATEIS UMR 5510, F-69621 Villeurbanne, France

[2] ArcelorMittal R&D, Automot Prod, F-57283 Maizieres Les Metz, France

来源：

ENGINEERING FAILURE ANALYSIS | 2012年 / 25卷

关键词：

Advanced High Strength Steels; Resistance spot welding; Tensile Shear; Damage; Finite element; RESISTANCE; FAILURE; SPECIMENS; BEHAVIOR; PREDICTION; EXPULSION; GROWTH; JOINTS; METAL; MODEL;

D O I：

10.1016/j.engfailanal.2012.04.009

中图分类号：

TH [机械、仪表工业];

学科分类号：

0802 ;

摘要：

Damage of Advanced High Strength Steel resistance spot welds is investigated in Tensile Shear by means of coupled microtomography, metallography and fractography. Two main failure mechanisms and failure zones are identified: (i) strain localization in the base metal/subcritical Heat Affected Zone (HAZ), (ii) ductile shear at the interface in the weld nugget. A finite element model is developed in order to illustrate these competing failure mechanisms leading to distinct macroscopic failure types. The local constitutive behavior is obtained from tensile tests on simulated HAZ microstructures and an estimation of the Rice integral U) at the notch tip is provided for the assessment of interfacial failure. The model enables capturing the main trends in failure type transition as a function of weld geometry as well as a reliable estimation of the load bearing capacity. (C) 2012 Elsevier Ltd. All rights reserved.

引用

页码：112 / 122

页数：11

共 40 条

[1]

Anderson T., 1995, FRACTURE MECH FUNDAM, P453

[2]

[Anonymous], WELD WORLD

[3]

[Anonymous], 2001, 14272 ISO

[4]

[Anonymous], 1997, ASTM STP

[5]

[Anonymous], 2008, SWANTEC SOFTW ENG AP

[6]

[Anonymous], 2002, 14273 ISO

[7]

[Anonymous], 2004, 182782 ISO

[8]

[Anonymous], ABAQUS USERS MANUAL

[9] Characterization by X-ray computed tomography of decohesion, porosity growth and coalescence in model metal matrix composites [J].

Babout, L ;

Maire, E ;

Buffière, JY ;

Fougères, R .

ACTA MATERIALIA, 2001, 49 (11) :2055-2063

[10] Liquid zinc embrittlement of a high-manganese-content TWIP steel [J].

Beal, Coline ;

Kleber, Xavier ;

Fabregue, Damien ;

Bouzekri, Mohamed .

PHILOSOPHICAL MAGAZINE LETTERS, 2011, 91 (04) :297-303

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