Solid–liquid structural break-up in M2 tool steel for semi-solid metal processing

2009 ◽  
Vol 44 (3) ◽  
pp. 869-874 ◽  
Author(s):  
M. Z. Omar ◽  
H. V. Atkinson ◽  
A. A. Howe ◽  
E. J. Palmiere ◽  
P. Kapranos ◽  
...  
Keyword(s):  
Tool Steel ◽  
Structural Break ◽  
Solid Metal ◽  
Metal Processing ◽  
Break Up ◽  
Semi Solid ◽  
Solid Liquid

Finite-element simulation of semi-solid metal processing of tool steel encased in carbon steel

SIMULATION ◽  
2021 ◽  
pp. 003754972110610
Author(s):  
Eduardo Paixão Ritter ◽  
Felipe Tempel Stumpf
Keyword(s):  
Finite Element ◽  
Tool Steel ◽  
Tensile Tests ◽  
Solid Metal ◽  
Element Analysis ◽  
Precise Control ◽  
Element Simulation ◽  
Metal Processing ◽  
Scale Experiment ◽  
Semi Solid

The semi-solid metal processing allows for the production of components with complex geometries allied to lower forming forces. In the case of X210Cr12 tool steel, one big advantage of semi-solid metal processing is that it produces a microstructure free of precipitated chromium carbides, resulting in higher resistance to cyclic stresses. However, the application of this process in steels is limited until now due to technical difficulties, such as high temperatures, the necessity of a precise control of temperature, and the narrow liquidus–solidus range. For that reason, a preliminary numerical assessment of the forming procedure is highly welcome, in order to reduce potential errors in the final component. In this paper, we propose a methodology for the numerical simulation of semi-solid metal processing in steel samples under hot compression. We show that it is possible to use multilinear hardening plasticity models whose only input are the flow stress curves of each material. We also show that it is mandatory that these experimental curves are obtained through tensile tests performed at the same temperature as the working/simulated component. To validate the methodology, a full-scale experiment is undertaken so that the deformed sample can be compared to the numerical results. It is concluded that the methodology is suited for the assessment of mechanical quantities during the finite-element analysis of semi-solid processing of steel.

SSM Provides Important Advantages; So, why has SSM Failed to Achieve Greater Market Share?

2014 ◽  
Vol 217-218 ◽  
pp. 481-486 ◽  
Author(s):  
John L. Jorstad
Keyword(s):  
Turbulent Flow ◽  
Heat Treating ◽  
Solid Metal ◽  
Light Metals ◽  
Solidification Shrinkage ◽  
Air Entrapment ◽  
Thin Sections ◽  
Metal Processing ◽  
Semi Solid ◽  
Minimum Heat

Semi solid metal processing has numerous technical and economic advantages, such as viscous, non-turbulent flow (thus no air entrapment during casting), ability to fill ultra-thin sections (thus reduced part weight), little solidification shrinkage in the die (thus little or no porosity), minimum heat imparted to tooling (thus long tool life) and good response to T-5 aging (thus reduced heat treating costs). Still, SSM has never achieved a prominent position in the field of light metals casting Why? Perhaps the reason was largely the down economy of recent years and SSM will yet emerge with the prominence once expected of it.

Impact of melt treatment on semi-solid metal processing

2007 ◽  
Vol 436 (1-2) ◽  
pp. 86-90 ◽  
Author(s):  
Sahrooz Nafisi ◽  
Reza Ghomashchi
Keyword(s):  
Solid Metal ◽  
Melt Treatment ◽  
Metal Processing ◽  
Semi Solid

scholarly journals Semi-solid metal processing.

1995 ◽  
Vol 45 (6) ◽  
pp. 346-354 ◽  
Author(s):  
Akihiko NAMBA
Keyword(s):  
Solid Metal ◽  
Metal Processing ◽  
Semi Solid

Semi-Solid Metal Processing of Aluminum Alloy A390

2002 ◽  
Author(s):  
Stephen Midson ◽  
Jay Keist ◽  
Jeff Svare
Keyword(s):  
Aluminum Alloy ◽  
Solid Metal ◽  
Metal Processing ◽  
Semi Solid

Semi-Solid Metal Processing – A Process Looking for a Market

2008 ◽  
Vol 141-143 ◽  
pp. 1-8 ◽  
Author(s):  
Plato Kapranos
Keyword(s):  
Metal Forming ◽  
Solid Metal ◽  
Typical Case ◽  
Managerial Decisions ◽  
Human Scale ◽  
Patent Rights ◽  
Innovative Idea ◽  
Metal Processing ◽  
Semi Solid ◽  
The One

The birth of Semi-Solid Metal Forming (SSM) or as it has now come to be widely known, Thixoforming, is a typical case of development of a technological innovation. Serendipity, stroke of luck, call it what you may, the beginning of SSM is based on an almost accidental discovery by a student carrying out a series of meticulous experiments. On the one hand, some technological failures have contributed to the lack of success across the board for SSM technologies. On the other hand, the ‘long childhood’ of the resulting technology or the process of moving from ‘Innovative Idea to Market' has been largely the result of difficult and in hindsight sometimes wrong managerial decisions, occasional personality clashes, patent rights and at times unavoidable all out business 'warfare'. Of course, hindsight is beautiful but unfortunately it always comes after the event. However, if one looks carefully at some of the notable successes of SSM forming one can discern that the problems were more on the human scale; people failures rather than technology failures. This paper aims to bring out some of these points by outlining the historical development of Thixoforming.

Semi-Solid Metal Processing from an Industrial Perspective; The Best is yet to Come!

2016 ◽  
Vol 256 ◽  
pp. 9-14 ◽  
Author(s):  
John L. Jorstad
Keyword(s):  
Cost Effectiveness ◽  
Solid Metal ◽  
Lessons Learned ◽  
Product Lines ◽  
Cast Product ◽  
New Thinking ◽  
Metal Processing ◽  
To Come ◽  
Semi Solid ◽  
Cast Products

This paper considers the industrial viability of SSM in comparison to other casting processes and the products each process is best able to produce; in such a perspective, SSM has much to offer especially in terms of cost effectiveness for thinner-walled and higher-integrity cast product lines. The ultimate success of SSM will rely on lessons learned from all past thixocacting and rheoocasting developments and experiences. Proposed is new thinking with regard to adaptation of rheocasting to conventional casting equipment; changing the semi-solid processing paramigm is key to ultimate SSM competitiveness and to opening vast new markets for for semi-solid cast products.

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