scholarly journals Influence of niobium and yttrium on plastic deformation energy and plasticity of Ti-based amorphous alloys

China Foundry ◽  
2021 ◽  
Vol 18 (1) ◽  
pp. 60-67
Author(s):  
Sheng-feng Shan ◽  
Hao Wang ◽  
Bing Zhang ◽  
Yuan-zhi Jia ◽  
Ming-zhen Ma
Keyword(s):  
Plastic Deformation ◽  
Amorphous Alloys ◽  
Deformation Energy

scholarly journals Effect of Niobium and Yttrium Modified Ti-Based Bulk Amorphous Alloy on Correlation of Plastic Deformation Energy and Ductility

2019 ◽  
Author(s):  
Shengfeng Shan ◽  
Bing Zhang ◽  
Yuanzhi Jia ◽  
Mingzhen Ma
Keyword(s):  
Electron Microscopy ◽  
Plastic Deformation ◽  
Amorphous Alloys ◽  
Shear Bands ◽  
Deformation Energy ◽  
Bulk Amorphous Alloy ◽  
High Plasticity ◽  
Band Formation ◽  
Bulk Amorphous Alloys ◽  
Uniaxial Compressive Test

A series of Ti40Zr25Cu9Ni8Be18)100-xTMx (x = 0, 1, 2, 3, 4 at.%, TM = Nb, Y) Bulk amorphous alloys were designed and prepared using the copper mold casting method. The microstructures, glass forming ability and mechanical properties of the alloys were investigated by means of X-ray diffractometry (XRD), scanning electron microscopy (SEM), transmission electron microscopy (TEM), differential scanning colorimetry (DSC), depth-sensitive nanoindentation and uniaxial compressive test. The Bulk amorphous alloys with different ductility were investigated by measuring their plastic deformation energy (PDE) of the first pop-in events during loading. The relationships between the PDE value, shear band formation and ductility in Bulk amorphous alloys have been investigated. The results show that the PDE value decreases by the Nb addition and promotes the generation of multiple shear bands easily, which increase the fracture strength and plasticity significantly. Substituting Nb with Y has exactly the reverse effect. A useful rule for preparing of Bulk amorphous alloys with high plasticity is herein proposed, whereby the chemical composition of the Bulk amorphous alloys can be tailored to possess a lower PDE value.

Plastic Deformation-Induced Nanocrystalline Aluminum in Al-Based Amorphous Alloys

1993 ◽  
Vol 321 ◽  
Author(s):  
H. Chen ◽  
Y. He ◽  
G. J. Shiflet ◽  
S. J. Poon
Keyword(s):  
Plastic Deformation ◽  
Amorphous Alloy ◽  
Shear Band ◽  
Thin Layer ◽  
Ball Milling ◽  
Direct Observation ◽  
Amorphous Alloys ◽  
Shear Bands ◽  
Amorphous Ribbons ◽  
Nanocrystalline Aluminum

ABSTRACTWe report the first direct observation of crystallization induced in the slipped planes of aluminum based amorphous alloys by bending the amorphous ribbons. Nanometer-sized crystalline precipitates are found exclusively within a thin layer (shear band) in the slipped planes extending across the deformed amorphous alloy ribbons. It is also found that the nanocrystalline aluminum can be produced by ball-Milling. It is likely that local atomic rearrangements within the shear bands create the nanocrystals which appear after plastic deformation.

scholarly journals Plastic Deformation Energy on Single Particle Crushing

1975 ◽  
Vol 91 (1050) ◽  
pp. 535-540 ◽  
Author(s):  
Saburo YASHIMA ◽  
Fumio SAITO ◽  
Takatoshi SAGAWA ◽  
Toshiaki NUMATA ◽  
Shigeru SANO ◽  
...  
Keyword(s):  
Plastic Deformation ◽  
Single Particle ◽  
Deformation Energy ◽  
Particle Crushing

Correlations between plastic deformation capacity and fragility/characteristic free volume in amorphous alloys

2018 ◽  
Vol 6 (1) ◽  
pp. 015201
Author(s):  
Xiaojin Xu ◽  
Zhilin Long ◽  
Zhihai Ping ◽  
Chaoping Yan ◽  
Wei Chai
Keyword(s):  
Plastic Deformation ◽  
Free Volume ◽  
Amorphous Alloys ◽  
Deformation Capacity

scholarly journals Severe Plastic Deformation of Amorphous Alloys

2019 ◽  
Vol 60 (7) ◽  
pp. 1283-1293 ◽  
Author(s):  
Ádám Révész ◽  
Zsolt Kovács
Keyword(s):  
Plastic Deformation ◽  
Severe Plastic Deformation ◽  
Amorphous Alloys

Plastic deformation energy constant

1977 ◽  
Vol 11 (2) ◽  
pp. 163-164
Author(s):  
R. Vetter
Keyword(s):  
Plastic Deformation ◽  
Deformation Energy ◽  
Energy Constant

Mechanical Properties of High-Manganese Austenitic TWIP-Type Steel

2014 ◽  
Vol 783-786 ◽  
pp. 27-32 ◽  
Author(s):  
Leszek Adam Dobrzański ◽  
Wojciech Borek ◽  
Janusz Mazurkiewicz
Keyword(s):  
Mechanical Properties ◽  
Plastic Deformation ◽  
High Strength ◽  
Deformation Energy ◽  
Mechanical Twinning ◽  
Austenitic Steels ◽  
Manganese Steel ◽  
Cold Plastic Deformation ◽  
High Plasticity ◽  
High Manganese

Taking into consideration increased quantity of accessories used in modern cars, decreasing car’s weight can be achieved solely by optimization of sections of sheets used for bearing and reinforcing elements as well as for body panelling parts of a car. Application of sheets with lower thickness requires using sheets with higher mechanical properties, however keeping adequate formability. The goal of structural elements such as frontal frame side members, bumpers and the others is to take over the energy of an impact. Therefore, steels that are used for these parts should be characterized by high value of UTS and UEl, proving the ability of energy absorption. Among the wide variety of recently developed steels, high-manganese austenitic steels with low stacking faulty energy are particularly promising, especially when mechanical twinning occurs. Beneficial combination of high strength and ductile properties of these steels depends on structural processes taking place during cold plastic deformation, which are a derivative of SFE of austenite, dependent, in turn on the chemical composition of steel and deformation temperature. High-manganese austenitic steels in effect of application of proper heat treatment or thermo-mechanical treatment can be characterized by different structure assuring the advantageous connection of strength and plasticity properties. Proper determinant of these properties can be plastic deformation energy supply determined by integral over surface of cold plastic deformation curve. Obtaining of high strength properties with retaining the high plasticity has significant influence for the development of high-manganese steel groups and their significance for the development of materials engineering.

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