Grain size effect on the martensitic transformation of Ni50Mn25Ga17Cu8 high-temperature shape memory alloy

2015 ◽  
Vol 61 ◽  
pp. 42-46 ◽  
Author(s):  
Jingmin Wang ◽  
Yongjun Han ◽  
Hui Hua ◽  
Xiao Wang ◽  
Chengbao Jiang
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Size Effect ◽  
Shape Memory ◽  
Grain Size Effect

Effect of the Addition of Gd on Ni53Mn22Co6Ga19 High-Temperature Shape Memory Alloy

2010 ◽  
Vol 654-656 ◽  
pp. 2095-2098
Author(s):  
Yun Qing Ma ◽  
Shui Yuan Yang ◽  
San Li Lai ◽  
Shi Wen Tian ◽  
Cui Ping Wang ◽  
...  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Martensitic Transformation ◽  
Shape Memory Alloy ◽  
Shape Memory ◽  
Earth Element ◽  
Stress And Strain ◽  
Martensitic Transformation Temperature ◽  
Rich Phase ◽  
Shape Memory Properties

The rare earth element Gd is added to Ni53Mn22Co6Ga19 high-temperature shape memory alloy to refine the grain size and adjust the distribution of γ phase, and their microstructure, martensitic transformation behaviors, mechanical and shape memory properties were investigated. The results show that the grain size is obviously decreased and the γ phase tends to segregate at grain boundaries with increasing Gd content. Small amounts of Gd-rich phase were formed with 0.1 at.% Gd addition. The martensitic transformation temperature abruptly increases with 0.1 at.% Gd addition, then almost keeps constant with further increasing Gd content. The addition of 0.1 at.% Gd is proved to be beneficial to both tensile stress and strain before fracture, but negative to the shape-memory effect.

scholarly journals Grain size effect on the structural parameters of the stress induced epsilonhcp: martensite in iron-based shape memory alloy

2008 ◽  
Vol 11 (1) ◽  
pp. 63-67 ◽  
Author(s):  
Fabiana Cristina Nascimento ◽  
Paulo Roberto Mei ◽  
Lisandro Pavie Cardoso ◽  
Jorge Otubo
Keyword(s):  
Grain Size ◽  
Shape Memory Alloy ◽  
Size Effect ◽  
Shape Memory ◽  
Structural Parameters ◽  
Grain Size Effect ◽  
Iron Based

scholarly journals Grain Size Effect on the Thermal-induced Martensitic Transformation in Polycrystalline Cu-based Shape Memory Alloys

2015 ◽  
Vol 2 ◽  
pp. S743-S746 ◽  
Author(s):  
P.M. La Roca ◽  
L.M. Isola ◽  
C.E. Sobrero ◽  
Ph. Vermaut ◽  
J. Malarría
Keyword(s):  
Grain Size ◽  
Martensitic Transformation ◽  
Size Effect ◽  
Shape Memory Alloys ◽  
Shape Memory ◽  
Grain Size Effect

Grain size effect on the high-temperature hydrothermal stability of Cu/SAPO-34 catalysts for NH3-SCR

2020 ◽  
Vol 8 (6) ◽  
pp. 104559
Author(s):  
Haidi Xu ◽  
Chenlu Lin ◽  
Qingjin Lin ◽  
Xi Feng ◽  
Zhifeng Zhang ◽  
...  
Keyword(s):  
Grain Size ◽  
High Temperature ◽  
Size Effect ◽  
Hydrothermal Stability ◽  
Grain Size Effect ◽  
Nh3 Scr
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