Phase Equilibria in Co-Rich Co-Al-W Alloys at 1300°C and 900°C

Fei Xue; Mei Ling Wang; Qiang Feng

doi:10.4028/www.scientific.net/MSF.686.388

Paper Titles

The Tendency of Oxide Inclusion on Magnesium Alloys Intake Manifold in Tilt Cast
p.367

Thermal Analysis during Solidification of Mg-4%.wtAl Alloy during Lost Foam Casting Process
p.371

Thermodynamics of In Situ Formation of Mg₂Si and MgO in AZ91D /Flyash Composites
p.378

Wear Resistance Property of AM60 Magnesium Alloy Modified by Plasma Surface Treatment
p.382

Phase Equilibria in Co-Rich Co-Al-W Alloys at 1300^°C and 900°C
p.388

A Simplified Method of Synthesis and Purification of 4-Dimethylamino-N-Methyl -4-Stilbazolium Tosylate
p.392

Effect of Hot Pressing Technology on the Microstructure and Mechanical Properties of ZrO₂ Nano-Composite Ceramic Tool and Die Material
p.396

Effects of Load and Sliding Distance on the Wear Properties of Hybrid Friction Materials
p.401

Microstructural Model of Enveloping-Core Fiber Distribution of Conifer Wood and Research on Biomimetic Wood Composite
p.406

HomeMaterials Science ForumMaterials Science Forum Vol. 686Phase Equilibria in Co-Rich Co-Al-W Alloys at...

Phase Equilibria in Co-Rich Co-Al-W Alloys at 1300^°C and 900°C

Abstract:

The phase equilibria of Co-base trial alloys of Co-9Al-7.5W, Co-5.5Al-10W and Co-9Al-3W at 1300°C and 900°C were determined in the present investigation. The experimental alloys were γ single-phase alloys at 1300°C, although the existence of the γ' phase and the ε phase was identified due to cooling effect. The nearly cuboidal γ' phase and the plate-like DO₁₉ phase in alloys 9Al-7.5W and 5.5Al-10W were coarsened after long-term annealing at 900°C. It is suggested that the alloy 9Al-7.5W was in γ+γ' two-phase region, while the alloys 5.5Al-10W and 9Al-3W were in γ+DO₁₉ two-phase region and γ singe-phase region at 900°C, respectively.