Experimental and Crystal Plasticity Modeling Investigation of Micromechanical Fatigue Behavior of Ti-6Al-4V

Metals 2026 Open access

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Authors: Huanhuan Chen, Wei Li, Zhengming Qian, Dong Mi, Haihui Wu, Yiting Tang, Can Wu, Ziyue Zhang, Tiezheng Tang, Siqi Zhang, Dongfeng Li
DOI: 10.3390/met16030275
Cited by: 1
References: 35

Abstract

This study presents a predictive method for the fatigue behavior of Ti-6Al-4V based on a crystal plasticity finite element (CPFE) model. A thermally activated constitutive model is calibrated using experimental cyclic stress–strain data. The calibrated model simulates the macroscopic cyclic response and grain-scale deformation heterogeneity. By analyzing the simulated micromechanical fields, a scalar fatigue indicator parameter (FIP) is defined based on the accumulated inelastic work. The predictive capability of this FIP is validated against experimental data at multiple stress levels, demonstrating its effectiveness for microstructure-sensitive fatigue assessment.

Fields of Study & Subjects

Fatigue and fracture mechanics Titanium Alloys Microstructure and Properties High-Velocity Impact and Material Behavior

Publication details

Journal / source
Metals
Publisher
MDPI AG
Volume
16
Issue
3
Pages
275–275
Publication date
28 February 2026
Language
EN