Influence of tensile properties on hole expansion ratio investigated using a generative adversarial imputation network with explainable artificial intelligence

JA Lee, J Park, YT Choi, RE Kim, J Jung, S Lee… - Journal of Materials …, 2023 - Springer
Hole expansion ratio is widely used to estimate the stretch flangeability of sheet metals
which is a critical property of formability and to evaluate the efficiency of a forming process …

[HTML][HTML] Predicting edge fracture in dual-phase steels: Significance of anisotropy-induced localization

Z Li, Y Chang, W Liu, J Lian - International Journal of Mechanical Sciences, 2024 - Elsevier
While experimental methods for characterizing edge fracture have advanced significantly,
current modeling approaches often neglect factors like anisotropy evolution and localization …

Comparison of anisotropic yield functions and calibrations for accurate thickness prediction in hole expansion test

HS Park, F Barlat, SY Lee - Journal of Materials Processing Technology, 2023 - Elsevier
The hole expansion test is an appropriate evaluation method for assessing the formability of
automotive parts, where fracture prediction using simulated localized thickness is crucial …

Hole expansion characteristics of W-tempered 7075 aluminum alloy sheet in comparison with peak aged T6 tempered alloy sheet

Y Choi, J Lee, HJ Bong, MG Lee - Metals and Materials International, 2023 - Springer
The hole expansion formability of W-tempered aluminum 7075 sheet, which is prepared by
solution heat treatment and rapid cooling, is investigated comparatively with the peak aged …

Does friction contribute to formability improvement using servo press?

K Prasad, A Gupta, H Krishnaswamy, U Chakkingal… - Friction, 2023 - Springer
Servo press forming machines are advanced forming systems that are capable of imparting
interrupted punch motion, resulting in enhanced room temperature formability. The exact …

Performance review of various uncoupled fracture criteria for TRIP steel sheet

VK Barnwal, SY Lee, J Choi, JH Kim, F Barlat - International Journal of …, 2021 - Elsevier
The exact numerical description of ductile fracture for advanced high strength steel (AHSS)
sheets, particularly for different deformation modes, is an ongoing issue for the sheet metal …

Improving the stretch flangeability of ultra-high strength TRIP-assisted steels by introducing banded structure

Y Wang, Y Xu, X Wang, J Zhang, F Peng, X Gu… - Materials Science and …, 2022 - Elsevier
A novel ultra-high strength transformation induced plasticity (TRIP)-assisted steel with a
better combination of ductility and stretch flangeability was fabricated by introducing a …

Effects of mean normal stress on strain-hardening, strain-induced martensite transformation, and void-formation behaviors in high-strength TRIP-aided steels

K Sugimoto, S Shioiri, J Kobayashi - Metals, 2024 - mdpi.com
To analyze various types of cold formability in TRIP-aided polygonal ferrite (TPF), annealed
martensite (TAM), and bainitic ferrite (TBF) steels, the effects of the mean normal stress on …

[HTML][HTML] Achieving an excellent balance of strength, plasticity, and stretch flangeability in a 1000 MPa grade TRIP-assisted bainitic ferrite steel

Y Wang, X Hou, C Guo, J Zhang, X Wang… - Journal of Materials …, 2024 - Elsevier
To address the requirements for safety enhancement, weight reduction, and emission
reduction, a novel transformation-induced plasticity-assisted bainitic ferrite (TBF) steel was …

On the fracture characteristics of advanced high strength steels during hydraulic bulge test

VK Barnwal, SY Lee, J Choi, JH Kim, F Barlat - International Journal of …, 2021 - Elsevier
The advanced high strength steels (AHSS) are well recognized for their high-strength-to-
weight ratio combined with good shock absorption properties. Moreover, these steels are …