Stress Induced Martensitic Transformation in Ti-1023 Alloys

Abstract:

Mechanical behaviors of isothermal hot forged and solution treated Ti-1023 alloy with different initial microstructures were investigated. After heat treatment at 760°C and 820°C for 1 hour, Ti-1023 alloys mainly consisted of fine α particles and β phase with a large grain size. The CMWP (Convolution Multiple Whole Profile) analysis indicated that the dislocation density in Ti-1023 decreased with increasing heat treatment temperature. Ti-1023 alloy solution treated at 760°C showed high strength and large anisotropy in plasticity. Improved ductility was observed in the alloy with solution treatment at 820°C. Increasing work hardening rate related to stress induced martensite transformation was observed in Stage II of the work hardening rate curves.

• Periodical: Materials Science Forum (Volume 849)
• Pages: 219-225
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.849.219
• Online since: March 2016
• Authors: Li Li Chang, Jia Peng Liu
• Keywords: Mechanical Properties, Stress Induced Martensite Transformation, Titanium Alloy

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