Two-stage R phase transformation in a cold-rolled and annealed Ti?50.6at.%Ni alloy

2005 ◽  
Vol 52 (8) ◽  
pp. 757-760 ◽  
Author(s):  
D CHROBAK ◽  
D STROZ
Keyword(s):  
Phase Transformation ◽  
Two Stage ◽  
Ni Alloy ◽  
Cold Rolled

Texture and Ductility of Ni3Al Foils

2011 ◽  
Vol 306-307 ◽  
pp. 116-119
Author(s):  
Masahiko Demura ◽  
Ya Xu ◽  
Toshiyuki Hirano
Keyword(s):  
Grain Boundary ◽  
Grain Growth ◽  
Memory Effect ◽  
Texture Evolution ◽  
High Mobility ◽  
Two Stage ◽  
Texture Memory ◽  
Highly Effective ◽  
Cold Rolled

This article presents the texture evolution and the ductility improvement of the cold-rolled foils of boron-free Ni3Al during the recrystallization and the subsequent grain growth. The cold-rolled foils had sharp {110} textures. After the recrystallization at 873K/0.5h, the texture was disintegrated with several texture components. Interestingly, most of them had a single rotation relationship. i.e. 40˚ around <111>. With the progress of the grain growth, however, the texture returned to the sharp, cold-rolled textures. This two-stage texture evolution, called as “Texture memory effect”, was explained assuming a high mobility of the grain boundary with the 40˚<111> rotation relationship. The texture returning was highly effective to improve the ductility of the foils.

Fine-Grained Structures Associated with Deformation Twin and Its Influence on Tensile Behaviours in a Cold-Rolled Fe-Ni Alloy

2006 ◽  
Vol 503-504 ◽  
pp. 895-900 ◽  
Author(s):  
Tatsuya Morikawa ◽  
Taku Moronaga ◽  
Kenji Higashida
Keyword(s):  
Deformation Twin ◽  
Liquid Nitrogen Temperature ◽  
Invar Alloy ◽  
High Yield ◽  
Fine Grained ◽  
Transmission Electron ◽  
Ni Alloy ◽  
Cold Rolled ◽  
Crystallographic Planes

Fine-grained structures in Fe-36mass%Ni Invar alloy have been investigated by using transmission electron microscopy (TEM). Particular attention has been paid on the role of deformation twinning in the formation of fine-grained structures and its influence on tensile stressstrain behaviours of rolled specimens. In Fe-Ni Invar alloy with a moderate stacking fault energy, deformation twin did not appear in usual cold-rolling at room temperature (RT), where a kind of cell walls was formed and the Cu-type texture was observed. On the other hand, twinning was occurred by rolling when specimens were cooled to liquid nitrogen temperature (LNT) immediately before the rolling. In such case, a fine lamellar structure was developed and the brass-type texture appeared. However, the lamella boundaries did not coincide with any crystallographic planes, and they were intersected with the bands of deformation twin. Specimens rolled by 90% in thickness reduction exhibited tensile stressstrain behaviours similar to those observed in specimens with SPD structures. In particular, specimens rolled at LNT showed high yield strengths and non-uniform deformation.

Atomic-scale understanding of stress-induced phase transformation in cold-rolled Hf

2017 ◽  
Vol 131 ◽  
pp. 271-279 ◽  
Author(s):  
Henglv Zhao ◽  
Min Song ◽  
Song Ni ◽  
Shuai Shao ◽  
Jian Wang ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Atomic Scale ◽  
Cold Rolled

Reobservations on ordering, precipitation and polymorphic phase transformation phenomena during annealing of a severely cold rolled magnetic Fe-Co-10V alloy

Materialia ◽  
2020 ◽  
Vol 12 ◽  
pp. 100765 ◽  
Author(s):  
Mohammad R. Kamali ◽  
Ali R. Mashreghi ◽  
L. Pentti Karjalainen ◽  
Saeed Hasani ◽  
Vahid Javaheri ◽  
...  
Keyword(s):  
Phase Transformation ◽  
Cold Rolled

Phase transformation α → ε in meteoritic Fe–Ni alloy under shock-wave loading

2016 ◽  
Vol 61 (12) ◽  
pp. 1830-1834 ◽  
Author(s):  
R. F. Muftakhetdinova ◽  
V. I. Grokhovsky ◽  
E. A. Kozlov ◽  
I. V. Khomskaya ◽  
G. A. Yakovlev
Keyword(s):  
Shock Wave ◽  
Phase Transformation ◽  
Shock Wave Loading ◽  
Wave Loading ◽  
Ni Alloy

scholarly journals Phase Transformation Control of Powder Metallurgy Super-Elastic Ti–Ni Alloy by Adding Co Element

2019 ◽  
Vol 60 (8) ◽  
pp. 1583-1590
Author(s):  
Tomoki Eda ◽  
Anak Khantachawana ◽  
Junko Umeda ◽  
Katsuyoshi Kondoh
Keyword(s):  
Phase Transformation ◽  
Powder Metallurgy ◽  
Ni Alloy

Phase Transformation Kinetics During Annealing of Cold-Rolled AISI 309Si Stainless Steel

2020 ◽  
Vol 51 (5) ◽  
pp. 1955-1959 ◽  
Author(s):  
Ata Abdi ◽  
Hamed Mirzadeh ◽  
Mohammad Javad Sohrabi ◽  
Meysam Naghizadeh
Keyword(s):  
Stainless Steel ◽  
Phase Transformation ◽  
Transformation Kinetics ◽  
Phase Transformation Kinetics ◽  
Cold Rolled
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