scholarly journals Microstructure and Mechanical Properties of Ultrafine Structured Al-4wt%Cu-(2.5-10) vol.%SiC Nanocomposites Produced by Powder Consolidation Using Powder Compact Extrusion

2015 ◽  
pp. 1-15 ◽  
Author(s):  
Amro Gazawi ◽  
◽  
Brian Gabbitas ◽  
Deliang Zhang ◽  
Charlie Kong ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Powder Compact ◽  
Powder Consolidation ◽  
Microstructure And Mechanical Properties

Preparation, Microstructure and Properties of Ti-6Al-4V Rods by Powder Compact Extrusion of Powder Mixture

2012 ◽  
Vol 520 ◽  
pp. 70-75 ◽  
Author(s):  
Fei Yang ◽  
De Liang Zhang ◽  
Hui Yang Lu ◽  
Brian Gabbitas
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Powder Mixture ◽  
Master Alloy ◽  
Powder Compact ◽  
Thermomechanical Processing ◽  
Low Cost ◽  
Extrusion Temperature ◽  
Ingot Metallurgy ◽  
Microstructure And Mechanical Properties

Ti-6Al-4V (wt%) alloy rods were prepared successfully using a low-cost method that combines mixing elemental and master alloy powders and powder compact extrusion. The microstructure and mechanical properties of the rods and the effects of extrusion temperature on them were investigated. The results showed that the microstructure and mechanical properties of the extruded rods were strongly affected by the extrusion temperature. With increasing extrusion temperature from 1200°C to 1300°C and keeping the powder compact holding time unchanged at 2 minutes, the fraction of undissolved V rich particles in the microstructure of the extruded rod decreased substantially to zero, the level of composition homogenization increased dramatically to the highest level, and the UTS and elongation of the extruded rods increased significantly from 886MPa and 1.2% to 1300MPa and 7.1%, respectively. The tensile properties of the Ti-6Al-4V alloy rods produced by powder compact extrusion of the powder mixture are comparable to those of Ti-6Al-4V alloy produced by ingot metallurgy and thermomechanical processing.

Effect of Powder Compact Holding Time on the Microstructure and Properties of Ti-6Al-4V Alloy Produced by Powder Compact Extrusion of a Powder Mixture of HDH Titanium and Al-V Master Alloy

2013 ◽  
Vol 551 ◽  
pp. 67-72 ◽  
Author(s):  
Fei Yang ◽  
De Liang Zhang ◽  
Brain Gabittas ◽  
Hui Yang Lu
Keyword(s):  
Mechanical Properties ◽  
Tensile Properties ◽  
Powder Mixture ◽  
Master Alloy ◽  
Powder Compact ◽  
Thermomechanical Processing ◽  
Low Cost ◽  
Holding Time ◽  
Ingot Metallurgy ◽  
Microstructure And Mechanical Properties

Ti-6Al-4V (wt%) alloy rods were prepared successfully using a low-cost method that combines mixing HDH titanium, elemental aluminum and Al-V master alloy powders and powder compact extrusion. The microstructure and mechanical properties of Ti-6Al-4V alloy and the effects of powder compact holding time on them were investigated. The results showed that powder compact holding time had a significant effect on the microstructure and mechanical properties of the extruded Ti-6Al-4V alloy rods. With increasing powder compact holding time from 2 to 10 min., the microstructure of the extruded rods became more homogeneous, and their UTS decreased from 1300 to 1215MPa and the elongation to fracture increased from 7.1 to 10.2%. The tensile properties of the Ti-6Al-4V alloy rods produced by powder compact extrusion of the powder mixture are comparable to those of Ti-6Al-4V alloy produced by ingot metallurgy and thermomechanical processing.

Powder Consolidation of Titanium and Titanium Alloys by a Powder Compact Forging Process

2016 ◽  
Vol 704 ◽  
pp. 68-74 ◽  
Author(s):  
Ming Tu Jia ◽  
Brian Gabbitas
Keyword(s):  
Mechanical Properties ◽  
Powder Compact ◽  
Titanium Powder ◽  
Full Density ◽  
Low Oxygen ◽  
Powder Consolidation ◽  
Forging Process ◽  
Cp Ti ◽  
Field Assisted Sintering ◽  
Powder Compacts

Powder compact forging in combination with induction sintering, a field assisted sintering technique (FAST), was used to produce commercially pure (CP) Ti and Ti-13V-11Cr-3Al parts. Green powder compacts with high relative density were manufactured by cold compaction and warm compaction, respectively. During the powder compact forging process, CP titanium powder was consolidated completely to produce a near net shaped top cover for a diving helmet with full density and good mechanical properties. Also, a Ti-13V-11Cr-3Al alloy was fully consolidated into a cylinder using blended elemental powders. As a comparison, raw titanium powder with different oxygen contents was used to make a Ti-13V-11Cr-3Al powder compact forging. Using a starting powder with low oxygen content, a forged cylinder with good mechanical properties was produced.

scholarly journals Effect of Powder Size on Microstructure and Mechanical Properties of 2A12Al Compacts Fabricated by Hot Isostatic Pressing

2018 ◽  
Vol 2018 ◽  
pp. 1-7 ◽  
Author(s):  
Xina Huang ◽  
Lihui Lang ◽  
Gang Wang ◽  
Sergei Alexandrov
Keyword(s):  
Mechanical Properties ◽  
Alloy Powder ◽  
Powder Compact ◽  
Hot Isostatic Pressing ◽  
Powder Size ◽  
Microstructure And Mechanical Properties ◽  
Powder Particles ◽  
Aluminum Alloy Powder ◽  
Precipitated Phases ◽  
Dense Powder

This paper studied the effects of powder size on densification, microstructure, and mechanical properties of the hot isostatic-pressed 2A12 aluminum alloy powder compact. The results show that the near-fully dense powder compact can be successfully achieved and the smaller the powder is, the higher the relative density is. In addition, as the powder size decreases, the precipitated phases in the powder compact change from continuously point-like distribution at the junctions among powder particles to the concentrated distribution at the three-way intersections. Compared with the large powder, the tensile strength, yield strength, and elongation of the compact with the small powder were improved by 14%, 30.8%, and 48.6%, respectively.

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