Step Reactive Sintering of Ti2AlNb Based Alloy with Element Powders

Yuan Xin Wang; Kai Feng Zhang; Lu Zhen

doi:10.4028/www.scientific.net/AMR.690-693.40

Paper Titles

An Experimental Study of High-Velocity Impact on Aluminum Foam Composite Shield Structure
p.20

Extraction of Tantalum from Ta₂O₅ Using SOM Process
p.25

Reaction Mechanism on Preperation of Ta with SOM Process
p.30

Sintering Characters Analysis of the Al₂O₃-86 Homogenized Bauxite
p.35

Step Reactive Sintering of Ti2AlNb Based Alloy with Element Powders
p.40

Study on Microstructures and Mechanical Properties of Die Casting Mg-xGd-3Y-0.5Zr Alloys
p.44

Study on Sintering Properties of Al₂O₃-70 Natural Mullite by New Processes
p.49

Study on the ZK60A and AZ31B Magnesium-Alloy in the Application on High-Speed Train Seats
p.53

The Effect of Heat Treatment on Microstructure and Performance of Die Forging Copper
p.58

HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 690-693Step Reactive Sintering of Ti2AlNb Based Alloy...

Step Reactive Sintering of Ti2AlNb Based Alloy with Element Powders

Abstract:

As a new effort, combined reactive sintering with hot pressing technique, the Ti-22Al-25Nb alloy was successful prepared with element mixed powders. Meanwhile, the reactive sintering was divided into two temperature ranges, which were at 873 K and 1373 K, respectively. The starting sintering kept 1h at 873K, and then the temperature was increased to 1373K, keeping 2h. The orthorhombic (Ti2AlNb) phase was observed in this sintered alloy. Moreover, the homogenization treat was conducted at 1473 K for 2h after the final sintering was accomplished, and the fraction of the orthorhombic phase increased significantly. The microstructures and the phases were analyzed. And the generation mechanism of the orthorhombic phase was also analyzed.