Modelling of Microstructure Evolution during Laser Processing of Intermetallic Containing Ni-Al Alloys

被引:6
作者
Jabbareh, Mohammad Amin [1 ]
Assadi, Hamid [2 ]
机构
[1] Hakim Sabzevari Univ, Dept Mat & Polymer Engn, Sabzevar 9617976487, Iran
[2] Brunel Univ London, Brunel Ctr Adv Solidificat Technol, Uxbridge UB8 3PH, Middx, England
基金
英国工程与自然科学研究理事会;
关键词
laser processing; additive manufacturing; microstructure; phase-field method; intermetallics; DIRECTED ENERGY DEPOSITION; PHASE-FIELD; MECHANICAL-PROPERTIES; RAPID SOLIDIFICATION; EQUIAXED TRANSITION; DENDRITIC GROWTH; KINETICS; COLUMNAR; MICROSEGREGATION; SEGREGATION;
D O I
10.3390/met11071051
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
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.
引用
收藏
页数:15
相关论文
共 39 条
[1]   A phase-field model for non-equilibrium solidification of intermetallics [J].
Assadi, H. .
ACTA MATERIALIA, 2007, 55 (15) :5225-5235
[2]   Site-ordering effects on element partitioning during rapid solidification of alloys [J].
Assadi, H ;
Greer, AL .
NATURE, 1996, 383 (6596) :150-152
[3]   Kinetics of solidification of B2 intermetallic phase in the Ni-Al system [J].
Assadi, H. ;
Reutzel, S. ;
Herlach, D. M. .
ACTA MATERIALIA, 2006, 54 (10) :2793-2800
[4]   Influence of ordering kinetics on dendritic growth morphology [J].
Assadi, H. ;
Oghabi, M. ;
Herlach, D. M. .
ACTA MATERIALIA, 2009, 57 (05) :1639-1647
[5]   Modelling of kinetics of solidification of intermetallic compounds [J].
Assadi, H ;
Greer, AL .
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 1997, 226 :70-74
[6]   Kinetics of solidification of intermetallic compounds in the Ni-Al system [J].
Assadi, H ;
Barth, M ;
Greer, AL ;
Herlach, DM .
ACTA MATERIALIA, 1998, 46 (02) :491-500
[7]   Promoting the columnar to equiaxed transition and grain refinement of titanium alloys during additive manufacturing [J].
Bermingham, M. J. ;
StJohn, D. H. ;
Krynen, J. ;
Tedman-Jones, S. ;
Dargusch, M. S. .
ACTA MATERIALIA, 2019, 168 :261-274
[8]   Anisotropic tensile behavior of Ti-6Al-4V components fabricated with directed energy deposition additive manufacturing [J].
Carroll, Beth E. ;
Palmer, Todd A. ;
Beese, Allison M. .
ACTA MATERIALIA, 2015, 87 :309-320
[9]   Laser additive manufactured Ti-6Al-4V alloy: Texture analysis [J].
Chandramohan, P. .
MATERIALS CHEMISTRY AND PHYSICS, 2019, 226 :272-278
[10]   Examination of dendritic growth and microsegregation during solidification of Al-Li binary alloy using the phase-field simulation coupling CALPHAD data [J].
Chen, Qingqing ;
Zhang, Lu ;
Tang, Sai ;
Liang, Chaoping ;
Ma, Yunzhu ;
Liu, Wensheng .
CALPHAD-COMPUTER COUPLING OF PHASE DIAGRAMS AND THERMOCHEMISTRY, 2021, 74