September 5, 2025MetalsOpen Access

Research on the Johnson–Cook Constitutive Model and Failure Behavior of TC4 Alloy

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A significant temperature-softening effect was observed, decreasing flow stress as temperature increased.
An increase in notch radius from 3 mm to 6 mm led to a 50% enhancement in post-fracture elongation in TC4 alloy.
Strain-hardening exhibited rate dependence, with a reduced hardening index under dynamic loading conditions.
3D tensile simulation in ABAQUS validated modified models with a 0.97 correlation coefficient for load–displacement curves.

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Experimental analysis demonstrates flow stress dependency and notch size influence on TC4 alloy, indicating new insights into material behavior.

Zhu et al. (2025) studied this question.

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Experimental analysis demonstrates flow stress dependency and notch size influence on TC4 alloy, indicating new insights into material behavior.