The ß-phase transforms to a', a and a" within a range of temperature from the ß-transus (Tß) to about 600oC, considering no external stress is applied. Two types of microstructure were obtained: acicular martensite when rapidly cooled and lamellar a/ß when slowly cooled from the ß phase field. The sequential transformation of ß into a', a-phase, a2, and a" was revealed as peaks on the coefficient thermal expansion (CTE) curves, however, reversed transformations: a" ß, and a ß, were revealed by the DSC thermograms. The presence of ß, a', a, a2 and a" was identified by means of XRD analysis and HRTEM.
Reference:
Mutombo, K, Siyasiya, C and Stumpf, W. 2015. Phase transformation cycle β→ α′ + α + α"→ β in Ti6Al4V alloy. In: Seventh International Light Metals Technology Conference(LMT 2015), Port Elizabeth, South Africa, July 27-29
Mutombo, K., Siyasiya, C., & Stumpf, W. (2015). Phase transformation cycle β→ α′ + α + α"→ β in Ti6Al4V alloy. Trans Tech Publications. http://hdl.handle.net/10204/8133
Mutombo, K, C Siyasiya, and W Stumpf. "Phase transformation cycle β→ α′ + α + α"→ β in Ti6Al4V alloy." (2015): http://hdl.handle.net/10204/8133
Seventh International Light Metals Technology Conference(LMT 2015), Port Elizabeth, South Africa, July 27-29. Due to copyright restrictions, the attached PDF file only contains the abstract of the full text item. For access to the full text item, please consult the publisher's website
