Thixoforming of GFM M2 tool steel from the As-annealed condition

Mohd. Zaidi Omar, E. J. Palmiere, A. A. Howe, H. V. Atkinson, P. Kapranos

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

Thixoforming is a forming process that shapes metal components in their semi-solid state. For this to be possible, it is preferable for an alloy to have an appreciable melting range and before forming the microstructure must consist of solid metal spheroids in a liquid matrix. There is strong interest in thixoforming high temperature materials such as tool steels. Here, a commercially produced M2 tool steel alloy, hot worked (by GFM), tempered and annealed, was subjected to a direct partial remelting experiment in a protective atmosphere from room temperature into its semi-solid region. The microstructures revealed equiaxed solid grains (in liquid matrix) of average sizes between 29 and 31 μm when reheated to above the solidus of 1320-1360°C. Subsequent thixoforming of the material in the form of a slug of 36 mm diameter and 46 mm height into a simple finger of 66 mm long, 43 mm wide and 7 mm thick at 1360°C showed that the slurry flowed thixotropically under very low flow load of typically less than about 2 kN.

Original languageEnglish
Title of host publicationProceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004
Pages521-531
Number of pages11
Publication statusPublished - 2004
Externally publishedYes
Event8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004 - Limassol
Duration: 21 Sep 200423 Sep 2004

Other

Other8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004
CityLimassol
Period21/9/0423/9/04

Fingerprint

Tool steel
Remelting
Microstructure
Liquids
Alloy steel
Metals
Melting
Protective atmospheres
Temperature
Experiments

Keywords

  • Direct partial remelting
  • M2 tool steel
  • Thixoforming

ASJC Scopus subject areas

  • Engineering(all)

Cite this

Omar, M. Z., Palmiere, E. J., Howe, A. A., Atkinson, H. V., & Kapranos, P. (2004). Thixoforming of GFM M2 tool steel from the As-annealed condition. In Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004 (pp. 521-531)

Thixoforming of GFM M2 tool steel from the As-annealed condition. / Omar, Mohd. Zaidi; Palmiere, E. J.; Howe, A. A.; Atkinson, H. V.; Kapranos, P.

Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004. 2004. p. 521-531.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Omar, MZ, Palmiere, EJ, Howe, AA, Atkinson, HV & Kapranos, P 2004, Thixoforming of GFM M2 tool steel from the As-annealed condition. in Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004. pp. 521-531, 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004, Limassol, 21/9/04.
Omar MZ, Palmiere EJ, Howe AA, Atkinson HV, Kapranos P. Thixoforming of GFM M2 tool steel from the As-annealed condition. In Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004. 2004. p. 521-531
Omar, Mohd. Zaidi ; Palmiere, E. J. ; Howe, A. A. ; Atkinson, H. V. ; Kapranos, P. / Thixoforming of GFM M2 tool steel from the As-annealed condition. Proceedings of the 8th International Conference on Semi-Solid Processing of Alloys and Composites, S2P 2004. 2004. pp. 521-531
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