Effect of Different Cold Rolling Reduction on the Microstructure and Mechanical Properties of Ti-3573 Titanium Alloy

Abstract

The metastable beta titanium alloy Ti-3Al-5Mo-7V-3Cr (Ti-3573) was used as experimental material in this paper. Different cold rolling reduction was conducted in this titanium alloy. The results show that the total elongation (A50) reached maximum value of 16% after 30% cold rolling. The tensile strength reached maximum value of 910 MPa when the cold reduction increases to 50%. Microstructural evaluation suggested that the precipitation of α phases, deformation twin and stress-induced martensite is responsible for the enhanced tensile properties. Moreover, the TRIP/ TWIP deformation mode contributes to the improvement of the ductility of the titanium alloys.

Microstructure, Texture Evolution, and Aging Behavior of a Cold‐Rolled Ti–B20 Alloy

“…However, the deformation mechanism of each alloy differs significantly due to the chemical components and parameters of the specific alloy. [18,[22][23][24] The Ti-B20 alloy is a new, high-strength β-Ti alloy designed by the Northwest Institute of Nonferrous Metals based on the criterion of multiple strengthening under critical molybdenum equivalent conditions. The microstructure evolution of the Ti-B20 alloy during cold deformation and heat treatment may differ from that of other β-Ti alloys due to the particularity of its critical molybdenum equivalent.…”

“…However, the deformation mechanism of each alloy differs significantly due to the chemical components and parameters of the specific alloy. [ 18,22–24 ]…”