Prediction of fracture limits of Ni–Cr based alloy under warm forming condition using ductile damage models and numerical method

Morchhale, Ayush; Badrish, Anand; Kotkunde, Nitin; Singh, Swadesh Kumar; Khanna, Navneet; Saxena, Ambuj; Nikhare, Chetan P.

doi:10.1016/s1003-6326(21)65660-1

Cited by 9 publications

(1 citation statement)

References 26 publications

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“…For the ductile fracture of an AA7075-T6 sheet, Yang et al [14] proposed a new digital image correlation method to determine the ductile fracture parameters, and the forming limit diagram was constructed using a partition optimization method based on multiple sets of fracture parameters. Under the influence of different process parameters such as forming temperature, lubrication mode, and forming speed, Morchhale et al [15] obtained the process curve by stretch forming. Stretch forming and deep drawing processes were conducted at 300 K and 673 K. The formability and strain limit of the IN625 alloy were determined, and a fracture-forming limit diagram (FFLD) was obtained.…”

Section: Introductionmentioning

confidence: 99%

Prediction of Hot Formability of AA7075 Aluminum Alloy Sheet

Wang

Sui

Guan

2023

Metals

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A uniaxial high-temperature tensile test of an AA7075 aluminum alloy sheet was conducted using an established induction heating test system. Five different types of specimens were designed to obtain the stress–strain curves at different forming temperatures and strain rates so as to construct and modify the Johnson–Cook constitutive model. The uniaxial tensile test of different stress states was numerically simulated using ABAQUS finite element software, and the stress triaxiality and equivalent fracture strain parameters were extracted. The Johnson–Cook ductile fracture model was constructed, and an error evaluation scheme was designed to determine the best failure parameter combination. Based on the obtained Johnson–Cook ductile fracture model, finite element models of different strain paths were constructed, and theoretical forming limit curves at different temperatures and strain rates were obtained. The results of the Nakazima test and finite element simulation are mostly consistent, which confirms the reliability of the constructed fracture model and theoretical forming limit curves.

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Section: Introductionmentioning

confidence: 99%