TY - JOUR
T1 - Laser-induced reversion of δ′ precipitates in an Al-Li alloy: Study on temperature rise in pulsed laser atom probe
AU - Khushaim, Muna S.
AU - Gemma, Ryota
AU - Al-Kassab, Tala'at
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: Contract grant sponsor: King Abdullah University of Science and Technology (KAUST).
PY - 2016/6/14
Y1 - 2016/6/14
N2 - The influence of tuning the laser pulse energy during the analyses on the resulting microstructure in a specimen utilizing an ultra-fast laser assisted atom probe was demonstrated by a case study of a binary Al-Li alloy. The decomposition parameters, such as the size, number density, volume fraction, and composition of δ' precipitates, were carefully monitored after each analysis. A simple model was employed to estimate the corresponding specimen temperature for each value of the laser energy. The results indicated that the corresponding temperatures for the laser pulse energy in the range of 10 to 80 pJ are located inside the miscibility gap of the binary Al-Li phase diagram and fall into the metastable equilibrium field. In addition, the corresponding temperature for a laser pulse energy of 100 pJ was in fairly good agreement with reported range of δ' solvus temperature, suggesting a result of reversion upon heating due to laser pulsing. © 2016 Wiley Periodicals, Inc.
AB - The influence of tuning the laser pulse energy during the analyses on the resulting microstructure in a specimen utilizing an ultra-fast laser assisted atom probe was demonstrated by a case study of a binary Al-Li alloy. The decomposition parameters, such as the size, number density, volume fraction, and composition of δ' precipitates, were carefully monitored after each analysis. A simple model was employed to estimate the corresponding specimen temperature for each value of the laser energy. The results indicated that the corresponding temperatures for the laser pulse energy in the range of 10 to 80 pJ are located inside the miscibility gap of the binary Al-Li phase diagram and fall into the metastable equilibrium field. In addition, the corresponding temperature for a laser pulse energy of 100 pJ was in fairly good agreement with reported range of δ' solvus temperature, suggesting a result of reversion upon heating due to laser pulsing. © 2016 Wiley Periodicals, Inc.
UR - http://hdl.handle.net/10754/621592
UR - http://doi.wiley.com/10.1002/jemt.22691
UR - http://www.scopus.com/inward/record.url?scp=85027932669&partnerID=8YFLogxK
U2 - 10.1002/jemt.22691
DO - 10.1002/jemt.22691
M3 - Article
C2 - 27297621
SN - 1059-910X
VL - 79
SP - 727
EP - 737
JO - Microscopy Research and Technique
JF - Microscopy Research and Technique
IS - 8
ER -