Method and apparatus for semi-solid material processing

Han, Qingyou; Jian, Xiaogang; Xu, Hanbing; Meek, Thomas T

Method and apparatus for semi-solid material processing

Patent · 24 November 2009

OSTI ID:1003018

Han, Qingyou ^[1]; Jian, Xiaogang ^[1]; Xu, Hanbing ^[1]; Meek, Thomas T ^[1]

Knoxville, TN

A method of forming a material includes the steps of: vibrating a molten material at an ultrasonic frequency while cooling the material to a semi-solid state to form non-dendritic grains therein; forming the semi-solid material into a desired shape; and cooling the material to a solid state. The method makes semi-solid castings directly from molten materials (usually a metal), produces grain size usually in the range of smaller than 50 .mu.m, and can be easily retrofitted into existing conventional forming maching.

Research Organization:: Oak Ridge National Laboratory (ORNL), Oak Ridge, TN (United States)

Sponsoring Organization:: USDOE

DOE Contract Number:: AC05-00OR22725

Assignee:: UT-Battelle, LLC (Oak Ridged, TN); University of Tennessee Research Foundation (Knoxville, TN)

Patent Number(s):: 7,621,315

Application Number:: 12/357,857

OSTI ID:: 1003018

Country of Publication:: United States

Language:: English

References (7)

Rheological behavior of Sn-15 pct Pb in the crystallization range Spencer, D. B.; Mehrabian, R.; Flemings, M. C. Metallurgical and Materials Transactions B, Vol. 3, Issue 7 https://doi.org/10.1007/BF02642580	journal	July 1972
Behavior of metal alloys in the semisolid state Flemings, Merton C. Metallurgical Transactions A, Vol. 22, Issue 5 https://doi.org/10.1007/BF02661090	journal	May 1991
Particle pushing: the concentration of particles near a solid interface during downward flow Han, Q.; Hunt, J. D. Journal of Crystal Growth, Vol. 140, Issue 3-4 https://doi.org/10.1016/0022-0248(94)90316-6	journal	July 1994
Rheocasting Flemings, M. C.; Riek, R. G.; Young, K. P. Materials Science and Engineering, Vol. 25 https://doi.org/10.1016/0025-5416(76)90057-4	journal	September 1976
Semisolid metal processing Kirkwood, D. H. International Materials Reviews, Vol. 39, Issue 5 https://doi.org/10.1179/imr.1994.39.5.173	journal	January 1994
Ultrasonic Treatment of Light Alloy Melts Eskin, G. I. https://doi.org/10.1201/9781498701792	book	May 1998
Redistribution of Particles during Solidification. Han, Q.; Hunt, J. D. ISIJ International, Vol. 35, Issue 6 https://doi.org/10.2355/isijinternational.35.693	journal	January 1995

Similar Records

Method and apparatus for semi-solid material processing

Patent · 2007 · OSTI ID:909347

Method and apparatus for semi-solid material processing

Patent · 2009 · OSTI ID:988289

Process and apparatus having improved efficiency for producing a semi-solid slurry

Patent · 1984 · OSTI ID:6401920

Related Subjects

36 MATERIALS SCIENCE

Method and apparatus for semi-solid material processing

Citation Formats

References (7)

Similar Records

Related Subjects