Near room-temperature formation of Cu3Sn: In-situ synchrotron X-ray diffraction characterization and thermodynamic assessments of its nucleation

Song，T.1; Schmid-Fetzer，R.2; Yan，M.3; Qian，M.1

2021-07-01

10.1016/j.actamat.2021.116894

ACTA MATERIALIA   影响因子和分区

1359-6454

1873-2453

The fabrication of CuSn at near room temperatures and atmospheric pressure remains out of reach. We propose a novel concept to address this challenge by exploiting both the classical nano-island model for dealloying and the nanocurvature effect on nucleation, in conjunction with bespoke precursor alloy design. In-situ synchrotron X-ray diffraction (XRD) confirmed significant formation of CuSn at both 70°C and 55°C in 180 min via a dealloying-realloying process in the designed precursor alloy Al67Cu18Sn15, compared with much slower formation at 125°C by conventional approaches. Furthermore, CuSn formed just 10 min after CuSn emerged at 70°C, being two orders of magnitude faster than in Cu/CuSn diffusion couples at 125°C. The energy barrier to the formation of a lenticular CuSn nucleus on CuSn nanocaps was assessed systematically using the CALPHAD approach through the initial driving force (DF) concept and DF-plateau method. The predictions were benchmarked against diffusion couple studies, which fully supported the experimental results. In addition, the in-situ synchrotron XRD data on phase evolution was analysed in detail using the well-established Johnson-Mehl-Avrami-Kolmogorov (JMAK) model, which provided further fundamental support to our conceptual design. The concept and methodology demonstrated are expected to be applicable to the fabrication of other challenging materials.

copper Cu3Sn dealloying growth nanocurvature nucleation realloying tin

SCI ; EI

英语

其他

Australian Research Council (ARC)["DP180103205","DP200102666"] ; Shenzhen Science and Technology Innovation Commission[JCYJ20180504165824643]

Materials Science ; Metallurgy & Metallurgical Engineering

Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering

WOS:000670106400005

PERGAMON-ELSEVIER SCIENCE LTD

20212110403119

Aluminum alloys ; Aluminum metallography ; Atmospheric pressure ; Binary alloys ; Computational complexity ; Conceptual design ; Copper alloys ; Crystallization ; Dealloying ; Nucleation ; Synchrotron radiation ; Ternary alloys ; Tin alloys ; Tin metallography ; X ray diffraction

Atmospheric Properties:443.1 ; Aluminum:541.1 ; Aluminum Alloys:541.2 ; Copper:544.1 ; Copper Alloys:544.2 ; Tin and Alloys:546.2 ; Computer Theory, Includes Formal Logic, Automata Theory, Switching Theory, Programming Theory:721.1 ; Chemical Operations:802.3 ; Particle Accelerators:932.1.1 ; Crystal Growth:933.1.2

MATERIALS SCIENCE

2-s2.0-85106240580

Scopus

1.Centre for Additive Manufacturing,School of Engineering,RMIT University,Melbourne,3000,Australia
2.Institute of Metallurgy,Clausthal University of Technology,Clausthal-Zellerfeld,Robert-Koch-Str. 42,D-38678,Germany
3.Southern University of Science and Technology,Department of Materials Science and Engineering,Shenzhen,China

Song，T.,Schmid-Fetzer，R.,Yan，M.,et al. Near room-temperature formation of Cu3Sn: In-situ synchrotron X-ray diffraction characterization and thermodynamic assessments of its nucleation[J]. ACTA MATERIALIA,2021,213.

Song，T.,Schmid-Fetzer，R.,Yan，M.,&Qian，M..(2021).Near room-temperature formation of Cu3Sn: In-situ synchrotron X-ray diffraction characterization and thermodynamic assessments of its nucleation.ACTA MATERIALIA,213.

Song，T.,et al."Near room-temperature formation of Cu3Sn: In-situ synchrotron X-ray diffraction characterization and thermodynamic assessments of its nucleation".ACTA MATERIALIA 213(2021).