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 |
|---|---|
| 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
Cite this
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On the role of cooling rate and temperature in forming twinned α’ martensite in Ti–6Al–4V. / Cao, Sheng; Zhang, Bohua; Yang, Yi; Jia, Qingbo; Li, Lei; Xin, Shewei; Wu, Xinhua; Hu, Qiaodan; Lim, Chao Voon Samuel.
In: Journal of Alloys and Compounds, Vol. 813, 152247, 15.01.2020.Research output: Contribution to journal › Article › Research › peer-review
TY - JOUR
T1 - On the role of cooling rate and temperature in forming twinned α’ martensite in Ti–6Al–4V
AU - Cao, Sheng
AU - Zhang, Bohua
AU - Yang, Yi
AU - Jia, Qingbo
AU - Li, Lei
AU - Xin, Shewei
AU - Wu, Xinhua
AU - Hu, Qiaodan
AU - Lim, Chao Voon Samuel
PY - 2020/1/15
Y1 - 2020/1/15
N2 - 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.
AB - 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.
KW - Quenching
KW - Titanium alloys
KW - Transmission electron microscopy
KW - Twinning
UR - http://www.scopus.com/inward/record.url?scp=85072230610&partnerID=8YFLogxK
U2 - 10.1016/j.jallcom.2019.152247
DO - 10.1016/j.jallcom.2019.152247
M3 - Article
VL - 813
JO - Journal of Alloys and Compounds
JF - Journal of Alloys and Compounds
SN - 0925-8388
M1 - 152247
ER -