Journal ArticleDOI
Effect of plastic anisotropy and Portevin-Le Chatelier bands on hole-expansion in AA7075 sheets in -T6 and -W tempers
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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.About:
This article is published in Journal of Materials Processing Technology.The article was published on 2021-10-01. It has received 20 citations till now. The article focuses on the topics: Formability.read more
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Natural aging behaviors of Al-Cu-Li alloy: PLC effect, properties and microstructure evolution
TL;DR: In this paper , the authors explored the NA behaviors and revealed the underlying mechanism for the combined interaction of Cu and Li solute atoms with mobile dislocations in 2195 Al-Cu-Li alloy.
Journal ArticleDOI
Local formability of medium-Mn steel
Fuhui Shen,Hesong Wang,Hesong Wang,Zhongjian Liu,Wenqi Liu,Markus Könemann,Guo Yuan,Guodong Wang,Sebastian Münstermann,Junhe Lian +9 more
TL;DR: In this paper, the local formability of a medium-Mn steel (MMnS), a promising candidate of the third generation of AHSS, is evaluated based on forming limit curves at fracture and compared with a dual-phase DP1000 steel using the damage mechanics approach.
Journal ArticleDOI
Local formability of medium-Mn steel
TL;DR: In this article , the local formability of a medium-Mn steel (MMnS), a promising candidate of the third generation of AHSS, is evaluated based on forming limit curves at fracture and compared with a dual-phase DP1000 steel using the damage mechanics approach.
Journal ArticleDOI
Observation of Portevin-le Chatelier effect in aluminum alloy 7075-w under a heterogeneous stress field
TL;DR: In this paper, the kinetics of PLC bands in hole expansion of a circular hole using a flat-headed punch are investigated for a solid-solution heat-treated AA7075 aluminum sheet.
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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.
Journal ArticleDOI
A model for the Portevin-Le Chatelier effect in substitutional alloys
TL;DR: In this article, the authors derived a model for the onset of the Portevin-Le Chatelier effect in substitutional alloys, based on the solute locking of dislocations temporarily arrested at obstacles in the glide path.
Journal ArticleDOI
LXXXVI. A note on the Portevin-Le Chatelier effect
TL;DR: In this paper, the concentration of vacancies is increased by plastic deformations, which can cause strain ageing at room temperature, and the authors propose a method to deal with this problem.
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High strain rate tensile testing of automotive aluminum alloy sheet
TL;DR: In this paper, room temperature and elevated temperature experiments were conducted on a tensile split Hopkinson bar apparatus to identify the constitutive response and damage evolution in AA5754 and AA5182 aluminum alloy sheet at high strain rates.