Microstructure and mechanical properties of TiAl alloys produced by rapid heating and open die forging of blended elemental powder compacts

2013 ◽  
Vol 563 ◽  
pp. 46-52 ◽  
Author(s):  
Yongjun Su ◽  
Deliang Zhang ◽  
Fantao Kong ◽  
Yuyong Chen
Keyword(s):  
Mechanical Properties ◽  
Rapid Heating ◽  
Elemental Powder ◽  
Tial Alloys ◽  
Blended Elemental ◽  
Die Forging ◽  
Microstructure And Mechanical Properties ◽  
Open Die Forging ◽  
Powder Compacts ◽  
Blended Elemental Powder

Thermo-Mechanical Treatment of Titanium Based Layered Structures Fabricated by Blended Elemental Powder Metallurgy

2018 ◽  
Vol 941 ◽  
pp. 1384-1390 ◽  
Author(s):  
Sergey V. Prikhodko ◽  
Pavlo E. Markovsky ◽  
Dmytro G. Savvakin ◽  
Oleksandr Stasiuk ◽  
Orest M. Ivasishin
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Structural Characteristics ◽  
Layered Materials ◽  
Layered Structures ◽  
Elemental Powder ◽  
Uniform Structure ◽  
Blended Elemental ◽  
Structural Applications ◽  
Blended Elemental Powder

High specific strength of Ti-based alloys and composites makes them highly requested materials in various structural applications, especially when lightweight is desired in high-strength constructions. When these alloys are used in layered structures, far advanced set of characteristics that combine different mechanical properties often non-compatible in a single layer uniform structure can be attained; for instance, high hardness or moduli systems are usually lacking of sufficient toughness. Mechanical properties of individual layer in multilayered materials can be controlled by changing chemical composition and microstructure within each layer specifically. In present study layered materials were formed by combination of the layer of Ti-6Al-4V alloy and metal matrix composites on its base reinforced with fine TiB and TiC particles. Structures were fabricated using blended elemental powder metallurgy (BEPM). The effect of different post-sintering thermo-mechanical treatments on structure of layered BEPM materials was studied. Processing parameters were assessed in terms of their influence on materials’ porosity, grain size and structure, distribution of reinforcement particles and layers integration. The effect of above mentioned structural characteristics on hardness of layered materials was evaluated.

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