Microstructure and Tensile Properties of Magnesium Alloy Containing Quasicrystallines Processed by Equal-Channel-Angular-Extrusion

2005 ◽  
Vol 475-479 ◽  
pp. 469-472 ◽  
Author(s):  
Ming Yi Zheng ◽  
Xiao Guang Qiao ◽  
Shi Wei Xu ◽  
Kun Wu ◽  
Shigeharu Kamado ◽  
...  
Keyword(s):  
Grain Size ◽  
Magnesium Alloy ◽  
Tensile Properties ◽  
Grain Refinement ◽  
Equal Channel Angular Extrusion ◽  
High Strength ◽  
Good Combination ◽  
Mg Alloy ◽  
High Ductility ◽  
Angular Extrusion

Equal channel angular extrusion (ECAE) was performed on as-cast ZW1101 (Mg-11wt%Zn- 0.9wt%Y) Mg alloy containing quasicrystallines. The grain size of α-Mg was effectively refined, and coarse eutectic quasicrystalline phases were broken and dispersed in the alloy by ECAE. The alloy processed by ECAE exhibited a good combination of high strength and high ductility, which is due to the grain refinement and fine dispersed quasicrystallines in the alloy.

Effect of Equal Channel Angular Extrusion on the Microstructure and Mechanical Properties of Magnesium Alloy Containing Quasicrystallines

2005 ◽  
Vol 488-489 ◽  
pp. 589-592 ◽  
Author(s):  
Ming Yi Zheng ◽  
Xiao Guang Qiao ◽  
Shi Wei Xu ◽  
Kun Wu ◽  
Shigeharu Kamado ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Tensile Strength ◽  
Magnesium Alloy ◽  
Ultimate Tensile Strength ◽  
Equal Channel Angular Extrusion ◽  
Extrusion Direction ◽  
Micro Hardness ◽  
Angular Extrusion ◽  
The Matrix

Equal channel angular extrusion (ECAE) was applied to an extruded ZW1101 (Mg - 11wt%Zn - 0.9wt%Y) Mg alloy containing quasicrystallines. The as-extruded ZW1101 alloy had an initial grain size of about 12 µm and bands of quasicrystalline phases parallel to the extrusion direction. After the extruded alloy was subjected to ECAE processing, the grain size was refined to about 0.5 µm, and the quasicrystalline phases were further broken and dispersed in the matrix. After the ECAE processing, the micro-hardness and yield strength of the alloy were increased, however, the ultimate tensile strength and the ductility of the alloy were slightly decreased.

Microstructure and Wear Properties of GCr15 Alloy Produced by Equal Channel Angular Extrusion

2011 ◽  
Vol 211-212 ◽  
pp. 661-665
Author(s):  
Guo Quan Xiang ◽  
Min Xin Zheng ◽  
Lian Qing Ji
Keyword(s):  
Grain Size ◽  
Mass Loss ◽  
Grain Refinement ◽  
Equal Channel Angular Extrusion ◽  
Optical Microscope ◽  
Wear Properties ◽  
Gcr15 Steel ◽  
Angular Extrusion

GCr15 alloy produced by hot-forged is subjected to equal channel angular extrusion (ECAE) process at 950°C. The microstructure of GCr15 steel via ECAE and annealed is studied by an optical microscope. The effect of ECAE and annealing on the wear properties of the alloy is also investigated. The results show that the grain size reduced from 50 mm to 10 mm via one pass ECAE, and the hardness of the alloy is increased. The wear mass loss of the alloy is greatly reduced due to the grain-refinement after ECAE and annealing.

Effect of Grain Size on Cross Wedge Rolling of Micro Copper Rod

2014 ◽  
Vol 622-623 ◽  
pp. 905-911 ◽  
Author(s):  
Chao Cheng Chang ◽  
Yao Sheng Hsiao
Keyword(s):  
Grain Size ◽  
Grain Refinement ◽  
Material Flow ◽  
Equal Channel Angular Extrusion ◽  
Curvature Radius ◽  
Cross Wedge Rolling ◽  
Rolling System ◽  
Forming Load ◽  
Angular Extrusion ◽  
The Cross

This study investigated the effect of grain size on the cross wedge rolling of micro copper rod. Annealing techniques and equal channel angular extrusion were employed to refine the grains of copper, after which the treated copper was machined to prepare the cylindrical billets with 1 mm diameter for conducting experiments. The billets were rolled between a pair of the dies fixed in a developed cross wedge rolling system to form micro copper rods. The results show that the developed system was able to successfully produced micro copper rods. The grain refinement led to a higher hardness and thus a greater forming load. The rod with fine grans had a larger concave curvature radius of the end face. The grain size clearly influences the material flow in the cross wedge rolling processes of the micro copper rod.

Microstructure and Properties of Pure Mg/ZK60 Laminate Processed by Accumulative Roll Bonding

2010 ◽  
Vol 650 ◽  
pp. 343-346 ◽  
Author(s):  
C. Xu ◽  
Ming Yi Zheng ◽  
Hai Chang ◽  
Xiao Shi Hu ◽  
Kun Wu ◽  
...  
Keyword(s):  
Magnesium Alloy ◽  
Tensile Properties ◽  
Accumulative Roll Bonding ◽  
High Strength ◽  
Pure Magnesium ◽  
Mg Alloy ◽  
Damping Capacity ◽  
Roll Bonding ◽  
Microstructure And Properties ◽  
Zk60 Magnesium Alloy

Commercial pure magnesium with excellent damping capacity and ZK60 magnesium alloy with high strength were accumulative roll bonded (ARBed) at 300oC up to 3 cycles to fabricate Mg laminate consisting of alternating layers of pure Mg and ZK60. Microstructure, tensile properties and damping capacity of the sheets were analyzed. The research suggests that Mg sheet having both high strength and excellent damping capacity can be developed by accumulative roll bonding of pure Mg and ZK60 Mg alloy.

Microstructure Evolution and Mechanical Properties of AZ 31 Mg Alloy Processed by Equal Channel Angular Extrusion

2005 ◽  
Vol 488-489 ◽  
pp. 601-604 ◽  
Author(s):  
Li Jin ◽  
Dong Liang Lin ◽  
Da Li Mao ◽  
Xiao Qing Zeng ◽  
Wen Jiang Ding
Keyword(s):  
Mechanical Properties ◽  
Yield Stress ◽  
Grain Refinement ◽  
Microstructure Evolution ◽  
Equal Channel Angular Extrusion ◽  
Large Angle ◽  
Az31 Alloy ◽  
Mg Alloy ◽  
Processing Temperature ◽  
Angular Extrusion

Microstructure evolution and mechanical properties of AZ31 Mg alloy during equal channel angular extrusion (ECAE) at the temperature range of 453-498K was investigated. The processing temperature is an important factor to affect the microstructure and mechanical properties of the Mg alloy during ECAE. ECAE processing can be practiced at 498k or upon the temperature for as-received AZ31 alloy. A new two-step ECAEed processing was successfully used with lowing the processing temperature to 453k. The ductility increased but yield stress decreased though the grain refinement after ECAE at 498k because the recrystallization took place and large angle grain boundary formed. However both the ductility and yield stress were increased after two-step ECAE, which was ascribed to grain refinement as well as incomplete dynamic recovery and recrystallization during the processing.

Effect of Second Phase on the Mechanical Properties of Mg-Al-Zn Alloy by Equal Channel Angular Extrusion

2007 ◽  
Vol 546-549 ◽  
pp. 249-252 ◽  
Author(s):  
Wen Jiang Ding ◽  
Li Jin ◽  
Dong Liang Lin ◽  
Xiao Qin Zeng ◽  
Da Li Mao
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Magnesium Alloy ◽  
Equal Channel Angular Extrusion ◽  
Tensile Deformation ◽  
Second Phase ◽  
Second Phase Particles ◽  
Angular Extrusion ◽  
Zn Alloy ◽  
Zn Alloys

The effect of second phase on the mechanical properties of AZ61 and AZ91 Mg-Al-Zn magnesium alloy processed by equal-channel angular extrusion (ECAE) has been investigated. The results revealed that cracks initiated at and propagated through the α-Mg/β-Mg17Al12 interfaces and grain boundaries of Mg-Al-Zn alloys during tensile deformation. For AZ61, the elongation increased with the increase of ECAE pass number and the decrease of grain size. However, the elongation of AZ91 with more second phase particles decreased with the increase of ECAE pass number and the decrease of grain size.

COPPER ALLOY No. 165

Alloy Digest ◽  
1977 ◽  
Vol 26 (2) ◽  
Keyword(s):  
Corrosion Resistance ◽  
Physical Properties ◽  
Tensile Properties ◽  
Copper Alloy ◽  
High Strength ◽  
Heat Treating ◽  
High Ductility ◽  
Electrical Conductor ◽  
Annealed Condition ◽  
Low Strength

Abstract Copper Alloy No. 165 is a copper-cadmium-tin alloy with low strength and high ductility in the annealed condition. In the hard-drawn condition, characterized by high strength and low ductility, it is used widely as an electrical conductor. This datasheet provides information on composition, physical properties, hardness, elasticity, and tensile properties as well as fatigue. It also includes information on corrosion resistance as well as forming, heat treating, machining, and joining. Filing Code: Cu-327. Producer or source: Copper and copper alloy mills.

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