Abstract
Quenching experiments having different cooling rates up to 1.6 × 104 ˚C/s were applied on rolled Ti–6Al–4V sheets. Twins were not observed in the condition with a low cooling rate. With an increased quenching rate to the order of 104 ˚C/s, {101¯1} twins were formed in the temperature range of 550–850 °C, and {101¯2} twins were activated at an even lower temperature range. These observations offer insights into the mechanism of twinned martensite formation for selective laser melted Ti–6Al–4V by considering the alternating thermal stress and fast cooling from decreasing peak temperatures in selective laser melting thermal cycles.
Original language | English |
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Article number | 152247 |
Number of pages | 5 |
Journal | Journal of Alloys and Compounds |
Volume | 813 |
DOIs | |
Publication status | Published - 15 Jan 2020 |
Keywords
- Quenching
- Titanium alloys
- Transmission electron microscopy
- Twinning