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Proceedings Paper

Study of the transitory formation of a1 bainite, as a precursor of a-phase in tempered SMAs
Author(s): Leandru G. Bujoreanu; Sergiu Stanciu; Paul Bârsănescu; Nicoleta M. Lohan
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Paper Abstract

Bainite transitory formation, during the heating of a martensitic copper base SMA, was predicted by DSC and DTA and confirmed by XRD, OM and TEM only in hot pressed air cooled state homogenized and tempered at 573 K. In this heat treatment state, due to the pre-existence of α-phase, bainite amount is expected to be too low, therefore non-distinguishable, for higher tempering temperatures, where it is suggested that transitory α1 bainite turned to equilibrium α-phase. The results suggest that bainite formation could be considered as a precursory of α-phase phase during the heating of Cu-Zn-Al martensitic alloys, with no pre-existing α.

Paper Details

Date Published: 6 January 2009
PDF: 6 pages
Proc. SPIE 7297, Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV, 72970B (6 January 2009); doi: 10.1117/12.823620
Show Author Affiliations
Leandru G. Bujoreanu, Gh. Asachi Technical Univ. of Iaşi (Romania)
Sergiu Stanciu, Gh. Asachi Technical Univ. of Iaşi (Romania)
Paul Bârsănescu, Gh. Asachi Technical Univ. of Iaşi (Romania)
Nicoleta M. Lohan, Gh. Asachi Technical Univ. of Iaşi (Romania)


Published in SPIE Proceedings Vol. 7297:
Advanced Topics in Optoelectronics, Microelectronics, and Nanotechnologies IV
Paul Schiopu; Cornel Panait; George Caruntu; Adrian Manea, Editor(s)

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