Comparative Characteristics of Martensite and Bainite in Cu-Based SMAs
Journal Title: Analele Universitatii "Dunarea de Jos" din Galati. Fascicula IX, Metalurgie si Stiinta Materialelor - Year 2014, Vol 37, Issue 3
Abstract
The present work reports the evolution of micro-structure and shape memory behavior in a Cu-15 Zn-6 Al (mass. %) shape memory alloy (SMA), as a function of the applied hot working procedure and of the performed heat treatments. To this purpose a special compressed-air forging hammer was employed. The samples were heated up to 1023 K into an electric furnace and swaged on a compressed-air forging hammer, by multiple blows. After several blows, the specimens were prepared, by maintaining the main plastic deformation direction, for structural analysis, being cut, embedded, ground, polished and etched. Structural analysis comprised optical (OM) and scanning electron (SEM) microscopy observations, performed with the view of emphasizing the morphological aspects of martensite and bainite. To reveal the atomic fluctuations, enabled by hot forging, energy dispersive X-ray spectroscopy analysis (EDS) measurements were performed by means of SEM analysis. The paper reports the results of OM, SEM and EDS observations, by corroborating the results obtained in martensite and bainite.
Authors and Affiliations
Elena MIHALACHE, Nicoleta Monica LOHAN, Bogdan PRICOP, Leandru-Gheorghe BUJOREANU, Marius-Gabriel SURU
Keywords
Related Articles
- EP ID EP587877
- DOI -
- Views 98
- Downloads 0
The Electromagnetic Proprieties of Hybrid Composites
This research investigates the electromagnetic behaviour of hybrid composites with heterogeneous epoxy matrix. The hybrid composites were formed by the wet lay-up method and were made of three types of simple plain fabri...
Characterization of Sintered Hardmetals Coated with TiC
This paper presents the realization of TiC thin films by CVD method. The thin layers of TiC thicknesses were 8 and 10μm, their thickness increasing with time, keeping the temperature. Diffractometer analysis certifies th...
Selective Growth of 1D Nanostructures Oxide Materials Using PDMS Stamp
The approach for selective growth of 1D nanostructured oxide materials using poly (dimethylsiloxane) (PDMS) stamp consists of using microcontact printing, as such the soft lithography technique, for transferring the patt...
Patent Enforcement: A Comparative Review Preventing Patent Trolling in Europe
The US has made significant progress in the patent legislation landscape as evidenced by the US Patent Act in the Constitution and America Invents Act (AIA) of 2011. Nevertheless, patent suits by non-practicing entities...
Studies and Researches on Obtaining Electrochemical Composite Coatings in Nickel - Ni / Kaolin Matrix
The paper presents the electrochemical obtaining of nickel matrix composite coatings using kaolin particles as dispersed phases. Watts electrolytes were used, with a pH = 4.5 current densities of 6, 9, 12 A/dm2, a disper...