Solidification of Metals and Alloys

A special issue of Metals (ISSN 2075-4701). This special issue belongs to the section "Metal Casting, Forming and Heat Treatment".

Deadline for manuscript submissions: closed (31 May 2021) | Viewed by 2684

Special Issue Editor


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Guest Editor
Department of Materials, The University of Manchester, Manchester M13 9PL, UK
Interests: metal solidification; additive manufacturing; X-ray imaging; in-situ characterization
Special Issues, Collections and Topics in MDPI journals

Special Issue Information

Dear Colleagues,

Over a few millennia, human civilization has employed solidification as one of the main ways to process metals and alloys. Metal casting has shaped human history while soldering, brazing and welding later became different forms of solidification processing that were essential for manufacturing. Besides, solidification is also the underlying process behind modern metal additive manufacturing. Evolving thermal, solute and other physical conditions largely determine the microstructure and defects that appear in solidified metal components. Thus, solidification dictates the strength, properties and resilience of the products. A good understanding of the relevant microstructure and defect formation mechanisms is, therefore, crucial for developing successful solidification processing capacities. Numerical modelling and the more recent emergence of situ experimental techniques have become prominent tools to probe, reveal and analyse transient and dynamic phenomena associated with solidification processing. Thus, this Special Issue embraces the studies of solidification of metals and alloys, focusing on, but not limited to, wider in situ experimental and numerical modelling studies. It will cover a wider perspective on recent advances in metals and alloy solidification, ranging from fundamental concerns, such as nucleation and growth, to engineering aspects, such as defect formation and process control.

Dr. Wajira Mirihanage
Guest Editor

Manuscript Submission Information

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Keywords

  • Nucleation
  • Dendrite growth
  • Casting
  • Welding
  • Metal additive manufacturing
  • Solidification defects

Published Papers (1 paper)

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Research

11 pages, 2754 KiB  
Article
Study on the Phase Selection and Debye Temperature of Hyper-Peritectic Al-Ni Alloy under High Pressure
by Xiaohong Wang, Zhipeng Chen, Duo Dong, Dongdong Zhu, Hongwei Wang and Zunjie Wei
Metals 2021, 11(1), 84; https://doi.org/10.3390/met11010084 - 4 Jan 2021
Cited by 6 | Viewed by 1932
Abstract
The phase selection of hyper-peritectic Al-47wt.%Ni alloy solidified under different pressures was investigated. The results show that Al3Ni2 and Al3Ni phases coexist at ambient pressure, while another new phase α-Al exists simultaneously when solidified at high pressure. Based [...] Read more.
The phase selection of hyper-peritectic Al-47wt.%Ni alloy solidified under different pressures was investigated. The results show that Al3Ni2 and Al3Ni phases coexist at ambient pressure, while another new phase α-Al exists simultaneously when solidified at high pressure. Based on the competitive growth theory of dendrite, a kinetic stabilization of metastable peritectic phases with respect to stable ones is predicted for different solidification pressures. It demonstrates that Al3Ni2 phase nucleates and grows directly from the undercooled liquid. Meanwhile, the Debye temperatures of Al-47wt.%Ni alloy that fabricated at different pressures were also calculated using the low temperature heat capacity curve. Full article
(This article belongs to the Special Issue Solidification of Metals and Alloys)
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