Results 271 to 280 of about 2,729,563 (324)

High strength and conductivity copper matrix composites reinforced by in-situ graphene through severe plastic deformation processes

, 2021
The dispersion of graphene in copper matrix and their interfacial bonding quality decisively determine the comprehensive performance of graphene/copper composites.
Tiejun Li, Yaoqi Wang, Ming Yang, H. Hou, Su-Jun Wu   +4 more
semanticscholar   +1 more source

Evidence of FCC to HCP and BCC-martensitic transformations in a CoCrFeNiMn high-entropy alloy by severe plastic deformation

, 2021
An equiatomic CoCrFeNiMn high entropy alloy was subjected to high-pressure torsion under a pressure of 10 GPa at room and cryogenic temperatures. Increasing straining and decreasing the deformation temperature led to deformation-induced FCC to HCP and ...
H. Shahmir, Peyman Asghari-Rad, M. Mehranpour, F. Forghani, Hyoung-Seop Kim, M. Nili-ahmadabadi   +5 more
semanticscholar   +1 more source

Severe Plastic Deformation - A Review

Materials Today: Proceedings, 2018
Abstract Severe plastic deformation is one of the methods widely used for producing a fine-grained structure throughout the volume. Different SPD methods have been used for producing a fine-grained and ultra-fine grained structure which effectively alters the microstructure and in turn improve the properties.
R.N. Harsha, V. Mithun Kulkarni, B. Satish Babu   +2 more
openaire   +1 more source

Severe plastic deformation-produced gradient nanostructured copper with a strengthening-softening transition

Materials Science & Engineering: A, 2021
Low-excess energy twin boundary can effectively stabilize the conventional grain boundary. It has been reported that deformation-activated nanotwins in nanograined metals produced by severe plastic deformation techniques can significantly enhance ...
Bo Wu, H. Fu, Xiao-Ye Zhou, Lei Qian, Jia-Si Luo, Jiaming Zhu, Wing-Bun Lee, Xusheng Yang   +7 more
semanticscholar   +1 more source

Severe Plastic Deformation of Steels

BHM Berg- und Hüttenmännische Monatshefte, 2008
In order to demonstrate the structural changes in steels during severe plastic deformation (SPD), Armco iron, a ferritic steel P800 and a pearlitic rail steel S900A are subjected to a high pressure torsion (HPT) deformation process. The microstructural evolution, the changes in microhardness and the flow stress behaviour are investigated.
S. Scheriau, R. Pippan
openaire   +1 more source

Dynamic recrystallization mechanism and improved mechanical properties of a near α high temperature titanium alloy processed by severe plastic deformation

Materials Characterization, 2020
The effect of deformation temperature on microstructure evolution and mechanical properties of a near α titanium alloy during isothermal multiple die forging (IMDF) is systematically investigated. Present study describes the grain refinement mechanism at
Yong-Gang Sun, Chang-Jiang Zhang, H. Feng, Shuzhi Zhang, Jian-Chao Han, Wanggang Zhang, Er-Tuan Zhao, Hong-Wei Wang   +7 more
semanticscholar   +1 more source

Half-Heusler alloys: Enhancement of ZT after severe plastic deformation (ultra-low thermal conductivity)

, 2020
Several n- and p-type Half-Heusler (HH) thermoelectric materials (Ti0.5Zr0.5NiSn-based and NbFeSb-based) have been processed by high-pressure torsion (HPT) to improve their thermoelectric performance via a drastic reduction towards ultra-low thermal ...
G. Rogl, Sanyukta Ghosh, Lei Wang, J. Buršík, A. Grytsiv, M. Kerber, E. Bauer, R. Mallik, Xing-Qiu Chen, M. Zehetbauer, P. Rogl   +10 more
semanticscholar   +1 more source

The role of pyramidal 〈  +  〉 dislocations in the grain refinement mechanism in Ti-6Al-4V alloy processed by severe plastic deformation

, 2020
This study focuses on the role of pyramidal 〈c + a〉 dislocations in the grain refinement mechanism in the Ti-6Al-4V alloy with an initial { 11 2 ¯ 0 } 10 1 ¯ 0 > rolling texture.
Chenglin Wang, Dapeng Yu, Zhiqiang Niu, Wen-Long Zhou, Guoqing Chen, Zhi-Qiang Li, Xue-Song Fu   +6 more
semanticscholar   +1 more source

The Role of Hydrostatic Pressure in Severe Plastic Deformation

Advanced Engineering Materials, 2003
AbstractThe contribution presents several experimental examples which show that the presence of an enhanced hydrostatic pressure—as compared to conventional large deformation modes—is one of the main features of severe plastic deformation (SPD). At the example of systematic high pressure torsion experiments with Cu at room temperature, strength ...
Zehetbauer, Michael, Stüwe, H P, Vorhauer, A, Schafler, Erhard, Kohout, Jan   +4 more
openaire   +1 more source

Paradoxes of Severe Plastic Deformation

Advanced Engineering Materials, 2003
AbstractSevere plastic deformation (SPD) can lead to emergence of microstructural features and properties in materials which are fundamentally different from the ones well known for conventional cold deformation. In particular, the instances of unusual phase transformations resulting in development of highly metastable states associated with formation ...
openaire   +1 more source