Quantitative analysis of microstructure evolution induced by temperature rise during (α + β) deformation of TA15 titanium alloy

Guo, Lingjun; Zhu, Shen; Yang, He; Fan, Xiaoguang; Chen, Fu-Long

doi:10.1007/s12598-015-0656-5

Cited by 4 publications

(1 citation statement)

References 19 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The overall transformation mechanism may be diverse because the starting assumption determines the calculated parameters in JMA equation. Guo et al [16] investigated the microstructural developments by deformation induced temperature rise in TA15 titanium alloy. A diffusion model was developed to depict the variation of particle size and volume fraction of equiaxed α under different heating rates.…”

Section: Introductionmentioning

confidence: 99%

The Effect of Initial Structure on Phase Transformation in Continuous Heating of a TA15 Titanium Alloy

Fan

Zhao

et al. 2017

Metals

View full text Add to dashboard Cite

Abstract:The effect of initial structure on phase evolution in continuous heating of a near-α TA15 titanium alloy (Ti-6Al-2Zr-1Mo-1V) was experimentally investigated. To this end; three microstructures were obtained by multiple heat treatment: I-bimodal structure with 50% equaixed α, II-bimodal structure with 15% equiaxed α, III-trimodal structure with 18% equiaxed α and 25% lamellar α. Differential scanning calorimetry (DSC), dilatometry and quantitative metallography were carried out on specimens with the three initial structures at heating rates from 5 to 40 • C/min. The transformation kinetics was modeled with the Johnson-Mehl-Avrami (JMA) approach under non-isothermal condition. It was found that there exists a four-stage transformation for microstructures I and III. The secondary and third stages overlap for microstructure II. The four stages of phase transformation overlap with increasing heating rate. In the presence of α laths, the phase transformation kinetics is affected by the composition difference between lamellar α and primary equiaxed α. Phase transformation is controlled by the growth of existing large β phase.

show abstract

Section: Introductionmentioning

confidence: 99%