Internal friction of an Fe–28Mn–6Si–5Cr–0.5NbC shape memory alloy

2006 ◽  
Vol 438-440 ◽  
pp. 796-799 ◽  
Author(s):  
Takahiro Sawaguchi ◽  
Takehiko Kikuchi ◽  
Fuxing Yin ◽  
Setsuo Kajiwara
Materials ◽  
2019 ◽  
Vol 12 (3) ◽  
pp. 376 ◽  
Author(s):  
Sergey Kustov ◽  
Jaume Rosselló ◽  
Miguel Lluís Corró ◽  
Vladimir Kaminskii ◽  
Konstantin Sapozhnikov ◽  
...  

The temperature and field dependences of internal friction and Young´s modulus are studied using a high-resolution ultrasonic (90 kHz) technique in stoichiometric ferromagnetic Ni2MnGa shape memory alloy close to the premartensitic transformation temperature, TPM, in the demagnetized state and under moderate fields. Several new effects observed like an apparent Young´s modulus softening close to TPM under moderate fields, instead of the hardening outside this range, as well as existing controversies in the apparent elastic and anelastic properties of Ni2MnGa close to TPM are explained by microeddy and macroeddy current relaxations that to date have been disregarded.


2013 ◽  
Vol 92 ◽  
pp. 82-85 ◽  
Author(s):  
Qingzhou Wang ◽  
Dongmei Lu ◽  
Chunxiang Cui ◽  
Najun Yan ◽  
Qian Wang

2012 ◽  
Vol 479-481 ◽  
pp. 1303-1306 ◽  
Author(s):  
Qing Zhou Wang ◽  
Chun Xiang Cui ◽  
Na Jun Yan ◽  
Fu Sheng Han

Internal friction behavior of a porous CuAlMn shape memory alloy was examined. Two internal friction peaks appear at around 350 oC and 380 oC during the first heating process in the as-quenched specimen, but they disappear during the second or more heating process. Two other internal friction peaks are found at around 150 oC and 325 oC from the second heating process. Correlated mechanisms of the peaks are discussed.


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