The Effect of Initial Structure on Phase Transformation in Continuous Heating of a TA15 Titanium Alloy
AbstractThe 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. View Full-Text
Scifeed alert for new publicationsNever miss any articles matching your research from any publisher
- Get alerts for new papers matching your research
- Find out the new papers from selected authors
- Updated daily for 49'000+ journals and 6000+ publishers
- Define your Scifeed now
Fan, X.; Li, Q.; Zhao, A.; Shi, Y.; Mei, W. The Effect of Initial Structure on Phase Transformation in Continuous Heating of a TA15 Titanium Alloy. Metals 2017, 7, 200.
Fan X, Li Q, Zhao A, Shi Y, Mei W. The Effect of Initial Structure on Phase Transformation in Continuous Heating of a TA15 Titanium Alloy. Metals. 2017; 7(6):200.Chicago/Turabian Style
Fan, Xiaoguang; Li, Qi; Zhao, Anming; Shi, Yuguo; Mei, Wenjia. 2017. "The Effect of Initial Structure on Phase Transformation in Continuous Heating of a TA15 Titanium Alloy." Metals 7, no. 6: 200.
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.