Effects of Rapid Solidification on Phase Formation and Microstructure Evolution of AgSbTe2-Based Thermoelectric Compounds

2017 ◽  
Vol 17 (3) ◽  
pp. 1650-1656 ◽  
Author(s):  
Alberto Castellero ◽  
Gianluca Fiore ◽  
Eliran Evenstein ◽  
Marcello Baricco ◽  
Yaron Amouyal
Metals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1051
Author(s):  
Mohammad Amin Jabbareh ◽  
Hamid Assadi

There is a growing interest in laser melting processes, e.g., for metal additive manufacturing. Modelling and numerical simulation can help to understand and control microstructure evolution in these processes. However, standard methods of microstructure simulation are generally not suited to model the kinetic effects associated with rapid solidification in laser processing, especially for material systems that contain intermetallic phases. In this paper, we present and employ a tailored phase-field model to demonstrate unique features of microstructure evolution in such systems. Initially, the problem of anomalous partitioning during rapid solidification of intermetallics is revisited using the tailored phase-field model, and the model predictions are assessed against the existing experimental data for the B2 phase in the Ni-Al binary system. The model is subsequently combined with a Potts model of grain growth to simulate laser processing of polycrystalline alloys containing intermetallic phases. Examples of simulations are presented for laser processing of a nickel-rich Ni-Al alloy, to demonstrate the application of the method in studying the effect of processing conditions on various microstructural features, such as distribution of intermetallic phases in the melt pool and the heat-affected zone. The computational framework used in this study is envisaged to provide additional insight into the evolution of microstructure in laser processing of industrially relevant materials, e.g., in laser welding or additive manufacturing of Ni-based superalloys.


CrystEngComm ◽  
2022 ◽  
Author(s):  
ruibo ma ◽  
Lili Zhou ◽  
Yong-Chao Liang ◽  
Ze-an Tian ◽  
Yun-Fei Mo ◽  
...  

To investigate microstructural evolution and plastic deformation under tension conditions, the rapid solidification processes of Ni47Co53 alloy are first simulated by molecular dynamics methods at cooling rates of 1011, 1012...


1998 ◽  
Vol 33 (11) ◽  
pp. 1621-1633 ◽  
Author(s):  
Q.Y. Pan ◽  
X. Lin ◽  
W.D. Huang ◽  
Y.H. Zhou ◽  
G.L. Zhang

2018 ◽  
Vol 748 ◽  
pp. 679-686 ◽  
Author(s):  
Mehdi Jafary-Zadeh ◽  
Zachary H. Aitken ◽  
Rouhollah Tavakoli ◽  
Yong-Wei Zhang

1987 ◽  
Vol 21 (10) ◽  
pp. 1341-1346 ◽  
Author(s):  
J.J. Valencia ◽  
C. McCullough ◽  
C.G. Levi ◽  
R. Mehrabian

2019 ◽  
Vol 6 (12) ◽  
pp. 126545 ◽  
Author(s):  
Jia Ju ◽  
Huan Liu ◽  
Yinhui Xu ◽  
Liguo Shuai ◽  
Chen Yan

1999 ◽  
Vol 268 (1-2) ◽  
pp. 90-96 ◽  
Author(s):  
Mingjun Li ◽  
Xin Lin ◽  
Guangsheng Song ◽  
Gencang Yang ◽  
Yaohe Zhou

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