What question did this study set out to answer?

The research aims to understand how varying iron content and rolling temperature influence the microstructure of Ti-Fe alloys.

February 26, 2026Open Access

Microstructural Formation Mechanism of α+β Dual Phase Ti-Fe Sintered Alloys via Hot Rolling Process

Key Points

The research aims to understand how varying iron content and rolling temperature influence the microstructure of Ti-Fe alloys.
Prepared α+β dual phase Ti-(0∼6 wt.%) Fe alloys via sintering and hot rolling.
Varying the Fe content and rolling temperatures at 750°C and 1000°C.
Analyzed the resulting microstructures and crystalline orientations.
Increased Fe content significantly raised the volume fraction of the β-Ti phase.
Hot rolling at 750°C led to fine microstructure formation due to grain growth suppression.
Rolling at 1000°C resulted in acicular α-Ti grains with random orientations and minimal residual strain.

Abstract

α+β dual phase Ti-(0∼6 wt.%) Fe alloys were prepared via sintering and hot rolling process to clarify the effects of Fe contents and the rolling temperature on their microstructures and crystalline orientation. With an increase in the Fe content, the volumetric fraction of the β-Ti phase, which contains high Fe solutes, drastically increased. When hot rolled at 750°C (α+β dual-phase temperature), each phase grew immediately after rolling and suppressed each other’s grain growth, resulting in fine microstructure formation and uniform residual strain. In Ti-Fe alloys rolled at 1000°C (single β-phase temperature), a very small amount of residual strain was observed, and acicular α-Ti grains with random crystalline orientations were formed due to the phase transformation from β-Ti grains after rolling.

KI fragen

Bookmark

View Full Paper