Our site saves small pieces of text information (cookies) on your device in order to deliver better content and for statistical purposes. You can disable the usage of cookies by changing the settings of your browser. By browsing our site without changing the browser settings you grant us permission to store that information on your device.
B. PRICOP1, B. ÖZKAL2, U. SÖYLER2, J. VAN HUMBEECK3, N. M. LOHAN1, M. G. SURU1, L.-G. BUJOREANU1,*
Samples of Fe-14Mn-6Si-9Cr-5Ni (mass. %) shape memory alloy were sintered from two powder mixtures: (i) as blended (0_MA) and (ii) equal amounts of as blended and mechanically alloyed (MA’d) powders (50_MA). In order to increase the compactness degree, different specimens were hot rolled at 1373 K and the last rolling pass was performed at four different temperatures: (i) room temperature (RT); (ii) 873 K; (iii) 1073 K and (iv) 1373 K. In order to emphasize the influence of both MA’d fraction and rolling final temperature, the eight resulting specimens were analysed by X-ray diffraction (XRD) as well as by scanning electron microscopy (SEM). XRD results allowed the qualitative and quantitative identification of the three component phases, namely γ (face centred cubic, fcc)-parent phase, ε-(hexagonal close packed, hcp) martensite and α’- (body centred tetragonal, bct) martensite. SEM micrographs enabled to observe the influence of MA’d fraction on the relative amounts of the three phases. The results suggest that the presence of MA’d fraction contributes to destabilization of α’(bct) martensite and increase of the amount of ε(hcp) martensite, with favourable effects on shape memory behaviour..
Mechanical alloying, Powder metallurgy, Fe-Mn-Si-Cr-Ni shape memory alloys, XRD, SEM.
B. PRICOP, B. ÖZKAL, U. SÖYLER, J. VAN HUMBEECK, N. M. LOHAN, M. G. SURU, L.-G. BUJOREANU, Influence of mechanically alloyed fraction and hot rolling temperature in the last pass on the structure of Fe-14Mn-6Si-9Cr-5Ni (mass. %) shape memory alloys processed by powder metallurgy, Optoelectronics and Advanced Materials - Rapid Communications, 8, 3-4, March-April 2014, pp.247-250 (2014).
Submitted at: Jan. 27, 2014
Accepted at: March 13, 2014
Optoelectronics and Advanced Materials - Rapid Communications
(2022): 0.5 - 2022 Journal Citation Reports (Clarivate Analytics, 2023)
Active accounts were imported to the new platform and assigned a random password by default. In order to access your account you need to access the login page and go through the Lost Password dialog (involves the system sending you an email with instructions) in order to reset your password. This step is necessary as passwords are kept in hashed form and the new platform uses modern hashing algorithms incompatible with the previous ones.