scholarly journals Phase diagram of FeNiCoAlTaB ferrous shape memory alloy on aging time

AIP Advances ◽  
2017 ◽  
Vol 7 (4) ◽  
pp. 045019 ◽  
Author(s):  
Zhijian Zhou ◽  
Jian Cui ◽  
Xiaobing Ren
Keyword(s):  
Phase Diagram ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Aging Time ◽  
Ferrous Shape Memory Alloy

Stress–temperature phase diagram of a ferromagnetic Ni–Mn–Ga shape memory alloy

2005 ◽  
Vol 53 (19) ◽  
pp. 5071-5077 ◽  
Author(s):  
V.A. Chernenko ◽  
J. Pons ◽  
E. Cesari ◽  
K. Ishikawa
Keyword(s):  
Phase Diagram ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Temperature Phase ◽  
Temperature Phase Diagram

scholarly journals Development of Ferrous Shape Memory Alloy Showing Huge Superelasticity

Materia Japan ◽  
2011 ◽  
Vol 50 (8) ◽  
pp. 339-345 ◽  
Author(s):  
Yuuki Tanaka ◽  
Toshihiro Omori ◽  
Yoshiyuki Himuro ◽  
Yuji Sutou ◽  
Ryosuke Kainuma ◽  
...  
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory ◽  
Ferrous Shape Memory Alloy

Shape Recovery Characteristics of Pipes With Heavy Wall Thickness Made by Ferrous Shape Memory Alloy

2004 ◽  
Author(s):  
Yoshinori Joto ◽  
Manabu Wada ◽  
Hisashi Naoi ◽  
Tadakatsu Maruyama
Keyword(s):  
Shape Memory Alloy ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Wall Thickness ◽  
Shape Recovery ◽  
Chemical Compositions ◽  
Test Machine ◽  
Core Tube ◽  
Recovery Strain ◽  
Ferrous Shape Memory Alloy

Recently, ferrous shape memory alloys have been developed. Shape recovery strains of ferrous shape memory alloys are smaller than those of Ti-Ni shape memory alloys[1,2]. Strength, ductility and workability of the former alloy are higher than those of the latter alloy. Therefore, ferrous shape memory alloys are tried to apply for several kinds of pipe joints, as an example, joints of support pipes in the tunnel[3]. One of the other applications, the alloys is used as the material of simulation model to analyze the deformation behavior of the core tube in the fast breeder reactor. In this study, we investigated the shape recovery characteristics of pipes with heavy wall thickness made by ferrous shape memory alloy. Chemical compositions of this alloy are Fe, 28%Mn, 6%Si and 5%Cr. The alloy is melted, and round bars are manufactured by rolling, and pipes are machined from them. Tensile strength is 1100MPa, and yield strength is 320MPa. Ratios of wall thickness to central diameter of pipes are 10, 15, 20 and 25%. We insert tapered punch in the pipe, and expanded it by test machine. Then the circumferential strain of the center diameter of the pipes is 7%. And finally, the heat treatment is conducted at 350 degrees C in order to induce the shape recovery strain, and the pipe diameter decreases by means of austenitic transformation. The results obtained by the experiment are shown as follows. As the value of ratios of wall thickness to center diameter decreases, shape recovery strain increases and seems to approach the shape recovery strain obtained by uni-axial tension test, which was conducted in the past time.

scholarly journals Influence of aging time on mechanical properties and microstructures of FeNiAlTa shape memory alloy

2013 ◽  
Vol 62 (15) ◽  
pp. 158106
Author(s):  
Yang Neng-Wu ◽  
Peng Wen-Yi ◽  
Yan Ming-Ming ◽  
Wang Wei-Wei ◽  
Shi Hai-Ping
Keyword(s):  
Mechanical Properties ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Aging Time
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