Porous CuAlMn Shape-Memory Alloys with Controlling Porosity and Pores’ Structural Parameter Produced by Sintering-Evaporation Process

Shen Gong; Z.A. Xiao; Zhou Li

doi:10.4028/www.scientific.net/AMR.123-125.1011

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 123-125Porous CuAlMn Shape-Memory Alloys with Controlling...

Porous CuAlMn Shape-Memory Alloys with Controlling Porosity and Pores’ Structural Parameter Produced by Sintering-Evaporation Process

Abstract:

The porous Cu-11.9Al-2.5Mn (wt %) shape memory alloys with open-cell structure were successfully prepared by Sintering-evaporation Process method. A mixture powders with CuAlMn and NaCl powder were hot pressed at 780°C for 3hrs in the hot-pressing equipment with dynamic vacuum of 0.001Pa, and then pressure force was unloaded and the sintering temperature was heated up to 990°C, the NaCl was melted and evaporated completely at 990°C for 24hrs. The shape and size of the pores among the porous CuAlMn shape memory alloys are almost the same as those of NaCl powders, the pores are interconnected. The microstructure, mechanical property and phase transformation behavior of the sample have been studied. The results show that the porous CuAlMn SMAs with controlling porosity and pores’ structural parameters can be prepared by Sintering-evaporation Process, and their phase transformation behaviors are similar to that of conventional bulk Cu-11.9Al-2.5Mn (wt %) shape memory alloys.

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Periodical:

Advanced Materials Research (Volumes 123-125)

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1011-1014

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.123-125.1011

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Online since:

August 2010

Authors:

Shen Gong, Z.A. Xiao, Zhou Li

Keywords:

Phase Transformation Behavior, Porous Shape-Memory Alloy, Sintering-Evaporation Process (SEP)

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