Topic
Semi-solid metal casting
About: Semi-solid metal casting is a research topic. Over the lifetime, 19 publications have been published within this topic receiving 118 citations.
Papers
15 Nov 2006-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this paper, the effect of forced convection and solute distribution in the context of stir-based SSM casting is investigated for Al-Si alloys through two different processes, i.e., conventional casting and SSM processing with the application of melt stirring.
Abstract: In most SSM processes, induced fluid flow or in more general term “forced convection” is an integral part of the process. The effect of fluid flow has been widely studied on the micro- and macrostructure of solidified alloys independent of the process specifications. These studies have been mostly concerned with columnar-equiaxed transition, and the process of macro-segregation. This is particularly important for solidification of alloys with partition coefficient (distribution) less than unity where solutes are rejected and piled up ahead of the growing interface due to the limited solubility of the solid. For SSM processes, it is important to understand the implication of forced convection and solute distribution in the context of stir-based SSM casting. The distribution of alloying elements is investigated for Al–Si alloys through two different processes, i.e. conventional casting and SSM processing with the application of melt stirring. It is shown that by stirring, not only nucleation temperature of the primary phase increases but also the silicon content of the primary α-Al particles is depleted. These two phenomena finally lead to the formation of globule particles with the prevention of further growth.
28 citations
TL;DR: In this article, a new process for semi-solid casting of ductile iron based on the high nucleation rate combined with locally mechanical stirring is presented, where the results showed that the process effectively changes the dendrite structure to globular one.
22 citations
Patent•
30 Apr 2004TL;DR: In this article, a method for refining primary aluminum in hypoeutectic alloys by mixing at least two hypo-utective alloys into a solid/semi-solid slurry is described.
Abstract: A method for the refining of primary aluminum in hypoeutectic alloys by mixing at least two hypoeutectic alloys into a solid/semi-solid hypoeutectic slurry is described The method provides control of the morphology, size, and distribution of primary Al in a hypoeutectic Al-Si casting by mixing a hypoeutectic Al-Si liquid with solid hypoeutectic Al-Si particles to impart desirable mechanical properties The invention enables SSM molding of hypoeutiectic alloys without the need for secondary processing steps associated with other rheocasting processes
17 citations
15 Apr 2007-Materials Science and Engineering A-structural Materials Properties Microstructure and Processing
TL;DR: In this article, a semi-solid-metal (SSM) casting by sole boron addition was studied and it was shown that the structure is not only refined but also the sphericity of the primary α-Al particles increased.
Abstract: Inoculation has been studied in the semi-solid-metal (SSM) casting by sole boron addition. By boron addition, the structure is not only refined but also the sphericity of the primary α-Al particles increased. Higher globularity coupled with smaller primary particles leads to superior flow of the billet in the compression test. It is also shown that the dissolved boron in the matrix of the master alloy and AlB2 particles are the key parameters in this evolution.
11 citations
Patent•
9 Feb 2007TL;DR: A brass alloy as raw materials for semi-solid metal casting has a component composition containing Zn of 8 to 40 mass %, Zr of 0.0005 to 0.04 mass % and P of 1.5 to 3.5 mass % as discussed by the authors.
Abstract: A brass alloy as raw materials for Semi Solid Metal casting has a component composition containing Zn of 8 to 40 mass %, Zr of 0.0005 to 0.04 mass %, P of 0.01 to 0.25 mass %, and a balance of Cu and inevitable impurities, further containing one or more kinds of Si of 2 to 5 mass %, Sn of 0.05 to 6 mass %, and Al of 0.05 to 3.5 mass % as needed, and further containing one or more kinds of Pb of 0.005 to 0.45 mass %, Bi of 0.005 to 0.45 mass %, Se of 0.03 to 0.45 mass %, and Te of 0.01 to 0.45 mass %.
11 citations
Related Topics (5)
Performance Metrics
| Year | Papers |
|---|---|
| 2021 | 1 |
| 2017 | 1 |
| 2014 | 3 |
| 2013 | 1 |
| 2012 | 1 |
| 2011 | 1 |