A simultaneous enhancement of both strength and ductility by a novel differential-thermal ECAP process in Mg-Sn-Zn-Zr alloy

2021 ◽  
pp. 161653
Author(s):  
Tianshui Zhou ◽  
Quanfa Zhang ◽  
Qianqian Li ◽  
Lidong Wang ◽  
Qinglin Li ◽  
...  
Keyword(s):  
Ecap Process ◽  
Strength And Ductility ◽  
Zr Alloy

Offsetting strength-ductility tradeoff in Mg-Sn-Zn-Zr alloy by a novel differential-thermal ECAP process

2021 ◽  
Vol 305 ◽  
pp. 130764
Author(s):  
Tianshui Zhou ◽  
Feifei Guo ◽  
Quanfa Zhang ◽  
Dexue Liu
Keyword(s):  
Ecap Process ◽  
Zr Alloy

scholarly journals Hardness and Texture of Electrolytic Copper Processed by ECAP at Ambient and Warm Temperature

2021 ◽  
Vol 31 (2) ◽  
pp. 74-87
Author(s):  
Hiron Akira Yamada Magalhães ◽  
Talita Gama Souza ◽  
Rodrigo Felix de Araujo Cardoso ◽  
Bruno Rangel Silva ◽  
Luiz Paulo Brandão
Keyword(s):  
Pure Copper ◽  
Homogeneous Distribution ◽  
Warm Temperature ◽  
Mechanical Hardness ◽  
Angular Pressing ◽  
Ecap Process ◽  
Hardness Property ◽  
Textural Changes ◽  
The One ◽  
Strength And Ductility

Among several severe plastic deformation (SPD) methods, the Equal Channel Angular Pressing (ECAP) process is one of the most popular. This process's main characteristic is producing materials with ultra-fine or nanometric grains. Due to these microstructural changes, it is possible to improve mechanical properties such as strength and ductility. In this perspective, the aim of the present work was to evaluate the variations of the mechanical hardness property associated with microstructural and textural changes of pure copper as a function of its processing by SPD via ECAP. For this, the material was submitted to four passes through routes A (the sample is repetitively pressed without any rotation between each pass) and Bc (the sample is rotated in the same sense by 90° between each pass) at cold and warm temperatures. Through the obtained result, it was verified that the ambient temperature of the Bc route was the one that promoted greater homogeneity in the microstructure and weakening of the texture after the fourth pass. On the other hand, warm processing of copper by ECAP promoted a softening of the samples and a homogeneous distribution of hardness in both routes.

Improving strength and ductility of Mg–Gd–Y–Zn–Zr alloy simultaneously via extrusion, hot rolling and ageing

2015 ◽  
Vol 643 ◽  
pp. 137-141 ◽  
Author(s):  
Chao Xu ◽  
Mingyi Zheng ◽  
Shiwei Xu ◽  
Kun Wu ◽  
Erde Wang ◽  
...  
Keyword(s):  
Hot Rolling ◽  
Strength And Ductility ◽  
Zr Alloy

Effect of Al3(Sc,Zr) Particles on Tensile Properties of an Al-Zn-Mg-Cu-Sc-Zr Alloy

2008 ◽  
Vol 604-605 ◽  
pp. 113-120
Author(s):  
O.N. Senkov ◽  
M.R. Shagiev ◽  
D.B. Miracle
Keyword(s):  
Heat Treatment ◽  
Tensile Properties ◽  
Al Alloy ◽  
Strength Increase ◽  
Strengthening Effect ◽  
Number Density ◽  
Treatment Conditions ◽  
Refined Microstructure ◽  
Strength And Ductility ◽  
Zr Alloy

Small additions of Sc and Zr may considerably improve both strength and ductility of 7000 series aluminum alloys, which is associated with precipitation of fine coherent Al3(Sc,Zr) particles. These particles also increase resistance to recrystallization and promote formation of a stable refined microstructure. Because of very low equilibrium solubility of Sc and Zr in Al alloys, a supersaturated solid solution of these elements in the Al matrix presented after casting is responsible for precipitation of the Al3(Sc,Zr) particles during subsequent heat treatment, while the strengthening effect depends on the particle size and number density. Therefore, it is necessary to optimize precipitation of the Al3(Sc,Zr) particles, in order to achieve superior balance of mechanical properties. In the present work, the effect of heat treatment conditions on microstructure and tensile properties of a developmental 7000 series Al alloy SSA018 modified with Sc and Zr was studied, with special emphasis on the analysis of size and number density of the Al3(Sc,Zr) particles, and their effect on the strength increase.

Bioinspired low-magnetic Zr alloy with high strength and ductility

2021 ◽  
Vol 199 ◽  
pp. 113856
Author(s):  
Weiwei Zhou ◽  
Xiaohao Sun ◽  
Yusuke Tsutsumi ◽  
Naoyuki Nomura ◽  
Takao Hanawa
Keyword(s):  
High Strength ◽  
Strength And Ductility ◽  
Zr Alloy

An alternating ageing-annealing process for enhancing strength and ductility of a Mg-Gd-Y-Zn-Zr alloy

2021 ◽  
Vol 828 ◽  
pp. 142103
Author(s):  
Jie Zheng ◽  
Zhe Chen ◽  
Zhaoming Yan ◽  
Zhimin Zhang ◽  
Yong Xue
Keyword(s):  
Annealing Process ◽  
Strength And Ductility ◽  
Zr Alloy

Ultrafine-grained Mg–Zn–Yb–Zr alloy with simultaneously improved strength and ductility processed by axisymmetric hot extrusion

Vacuum ◽  
2020 ◽  
Vol 173 ◽  
pp. 109157 ◽  
Author(s):  
Lu Li ◽  
Yu Wang ◽  
Cuncai Zhang ◽  
Tao Wang ◽  
Hao Lv ◽  
...  
Keyword(s):  
Hot Extrusion ◽  
Ultrafine Grained ◽  
Strength And Ductility ◽  
Zr Alloy

Strength and ductility optimization of Mg–Y–Nd–Zr alloy by microstructural design

2015 ◽  
Vol 68 ◽  
pp. 77-97 ◽  
Author(s):  
N. Kumar ◽  
D. Choudhuri ◽  
R. Banerjee ◽  
R.S. Mishra
Keyword(s):  
Microstructural Design ◽  
Strength And Ductility ◽  
Zr Alloy
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