Journal ArticleDOI
Mechanical properties, springback, and formability of W-temper and peak aged 7075 aluminum alloy sheets: Experiments and modeling
TLDR
In this paper, the formability and springback properties of W-tempered 7075 aluminum alloys were analyzed using the Marciniak-Kuczyinski forming limit diagram and U-draw bending springback simulations.About:
This article is published in International Journal of Mechanical Sciences.The article was published on 2020-03-15. It has received 62 citations till now. The article focuses on the topics: Forming limit diagram & Formability.read more
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Mechanical properties of solution heat treated Al-Zn-Mg-Cu (7075) alloy under different cooling conditions: Analysis with full field measurement and finite element modeling
TL;DR: In this article, the effect of W-temper heat treatment, consisting of solution heat treatment (SHT) and rapid cooling, on the mechanical properties and fracture of high strength aluminum alloy 7075 sheet is investigated experimentally and numerically.
Journal ArticleDOI
Crystal plasticity finite element–Marciniak-Kuczynski approach with surface roughening effect in predicting formability of ultra-thin ferritic stainless steel sheets
Hyuk Jong Bong,Jinwoo Lee +1 more
TL;DR: In this article, a combination of the crystal plasticity finite element (CPFE) approach and the Marciniak-Kuczynski (M-K) model was used to predict limit diagrams of 0.1 and 1 mm thick ultra-thin ferritic stainless steel (FSS) sheets.
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Modeling differential permanent softening under strain-path changes in sheet metals using a modified distortional hardening model
TL;DR: In this article, a modified distortional hardening model based on the homogeneous yield function based anisotropic hardening (HAH) was proposed to capture differential permanent softening (DPS) under strainpath changes in sheet metals, whereas the other features such as Bauschinger effect, transient behavior, and cross hardening phenomenon are retained as they are in the original HAH model.
Journal ArticleDOI
Effect of plastic anisotropy and Portevin-Le Chatelier bands on hole-expansion in AA7075 sheets in -T6 and -W tempers
TL;DR: In this article, the authors investigated the influence of tempers on the hole-expansion formability of an AA7075 aluminum sheet for -T6 (as-received) and -W tempers.
Journal ArticleDOI
Flow behaviors and deformation mechanism of WQ-tempered Al–Li alloy at cryogenic temperatures
TL;DR: In this article, the flow behaviors and microstructure evolution of a WQ-tempered (solution treatment followed by water quenching) 2195 Al-Li alloy was studied by uniaxial tension tests from −196 to 25°C and strain rates from 2.5 −10−4 to 1 −10 −2 s−1.
References
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Journal ArticleDOI
Recent development in aluminium alloys for the automotive industry
TL;DR: In this paper, the authors present a review of recent developments in aluminium alloys to improve formability, surface quality in both 5000 and 6000 alloys, and the bake hardening response of 6500 alloys.
Journal ArticleDOI
Limit strains in the processes of stretch-forming sheet metal
TL;DR: In this paper, a theoretical analysis of the process of the generation of the groove based on anisotropic plasticity theory is presented, and the system of equations derived was solved numerically with the aid of a computer, which enabled the limiting strain of the sheet metal to be determined as a function of the material.
Journal ArticleDOI
Plane stress yield function for aluminum alloy sheets—part 1: theory
Frédéric Barlat,Frédéric Barlat,J.C. Brem,Jeong W. Yoon,Jeong W. Yoon,Kwansoo Chung,Re Dick,D.J. Lege,Farhang Pourboghrat,Shi-Hoon Choi,E. Chu +10 more
TL;DR: In this article, a plane stress yield function that well describes the anisotropic behavior of sheet metals, in particular, aluminum alloy sheets, was proposed, which was introduced in the formulation using two linear transformations on the Cauchy stress tensor.
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Effects of Strain State and Strain Rate on Deformation-Induced Transformation in 304 Stainless Steel: Part II. Microstructural Study
TL;DR: In this paper, the γ→α transformation in 304 stainless steel was induced by plastic deformation under various conditions of strain, strain state and strain rate, and the transformation microstructures were examined by transmission electron microscopy (TEM).
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An alternative to kinematic hardening in classical plasticity
TL;DR: In this paper, an approach is proposed for the description of the plastic behavior of materials subjected to multiple or continuous strain path changes, which is not formulated with a kinematic hardening rule.