Mechanical Behavior of Titanium-Based Layered Structures Fabricated Using Blended Elemental Powder Metallurgy

2019 ◽  
Vol 28 (9) ◽  
pp. 5772-5792 ◽  
Author(s):  
Pavlo E. Markovsky ◽  
Dmytro G. Savvakin ◽  
Orest M. Ivasishin ◽  
Vadim I. Bondarchuk ◽  
Sergey V. Prikhodko
Keyword(s):  
Powder Metallurgy ◽  
Mechanical Behavior ◽  
Layered Structures ◽  
Elemental Powder ◽  
Blended Elemental ◽  
Blended Elemental Powder

Multi-layered structures of Ti-6Al-4V alloy and TiC and TiB composites on its base fabricated using blended elemental powder metallurgy

2019 ◽  
Vol 269 ◽  
pp. 172-181 ◽  
Author(s):  
O.M. Ivasishin ◽  
P.E. Markovsky ◽  
D.G. Savvakin ◽  
O.O. Stasiuk ◽  
M. Norouzi Rad ◽  
...  
Keyword(s):  
Powder Metallurgy ◽  
Layered Structures ◽  
Elemental Powder ◽  
Blended Elemental ◽  
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.

scholarly journals Structure and Properties of Layered Ti-6Al-4V-Based Materials Fabricated Using Blended Elemental Powder Metallurgy

2020 ◽  
Vol 321 ◽  
pp. 11028
Author(s):  
S.V. Prikhodko ◽  
O.M. Ivasishin ◽  
P.E. Markovsky ◽  
D.G. Savvakin ◽  
O.O. Stasiuk
Keyword(s):  
Powder Metallurgy ◽  
Metal Matrix Composites ◽  
Metal Matrix ◽  
High Hardness ◽  
Layered Structures ◽  
Elemental Powder ◽  
Matrix Composites ◽  
Microstructure And Properties ◽  
Blended Elemental ◽  
Low Weight

Due to the high specific strength of Ti, materials on its base are indispensable when high-strength and low-weight requests are a chief demand from the industry. Reinforcement of Ti-alloys with hard and light particles of TiC and TiB is a credible pathway to make metal matrix composites (MMC) with enhanced elastic moduli without compromising the material’s low-weight. However, reinforcement of the alloy with hard particles inevitably lowers the value of toughness and plasticity of material. Yet, in many applications simultaneous high hardness and high plasticity are not required through the entire structure. For instance, parts that need enhanced wear resistance or resistance upon ballistic impact demand high hardness and strength at the surface, whereas their core necessitates rather high toughness and ductility. Such combination of mechanical properties can be achieved on layered structures joining two and more layers of different materials with different chemical composition and/or microstructure within each individual layer. Multi-layered structures of Ti-6Al-4V alloy and its metal-matrix composites (MMC) with 5 and10% (vol.) of TiC and TiB were fabricated in this study using blended elemental powder metallurgy (BEPM) of hydrogenated Ti. Post-sintering hot deformation and annealing were sometimes also employed to improve the microstructure and properties. Structure of materials were characterized using light optical microscopy, scanning electron microscopy, electron backscattered diffraction, x-ray microscopy, tensile and 3-point flexural tests. The effect of various fabrication parameters was investigated to achieve desirable microstructure and properties of layered materials. Using optimized processing parameters, relatively large multilayered plates were made via BEPM and demonstrate superior anti-ballistic performance compared to the equally sized uniform Ti-6Al-4V plates fabricated by traditional ingot and wrought technology.

scholarly journals Hydride Approach in Blended Elemental Powder Metallurgy of Beta Titanium Alloys

2020 ◽  
Vol 321 ◽  
pp. 03009
Author(s):  
O.M. Ivasishin ◽  
D.G. Savvakin ◽  
D.V. Oryshych ◽  
O.O. Stasiuk ◽  
Li Yuanyuan
Keyword(s):  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Diffusion Processes ◽  
Elemental Powder ◽  
Strong Impact ◽  
Volume Changes ◽  
Blended Elemental ◽  
Master Alloys ◽  
Powder Blends ◽  
Blended Elemental Powder

The physical bases of hydrogenated titanium powders application in blended elemental powder metallurgy (BEPM) of titanium alloys were earlier developed. Hydrogen as temporary alloying addition for titanium strongly affects diffusion processes upon transformation of powder blends into alloys ensuring production of α+β and metastable β titanium alloys which mechanical properties meet standard requirements. At the same time, synthesis of metastable β alloys is complicated by a big amount of alloying elements which diffusion redistribution upon sintering has a strong impact on microstructure evolution. In present study BEPM hydride approach was expanded for production of biocompatible low modulus Ti-Zr-Nb and Ti-Zr-Nb-Ta alloys having BCC structure which are attractive materials for medical application. The alloys of prescribed compositions were produced using various starting powders, including TiH2, ZrH2, hydrogenated niobium, tantalum and Ti-Nb master alloys. Peculiarities of volume changes of multicomponent powder blends on dehydrogenation were investigated. The specific volume changes of powder components during dehydrogenation affect densification kinetic of powder blends and microstructure of as-sintered alloys.

Cost-Effective Blended Elemental Powder Metallurgy of Titanium Alloys for Transportation Application

2000 ◽  
Vol 188 ◽  
pp. 55-62 ◽  
Author(s):  
Orest M. Ivasishin ◽  
V.M. Anokhin ◽  
A.N. Demidik ◽  
Dmytro G. Savvakin
Keyword(s):  
Powder Metallurgy ◽  
Titanium Alloys ◽  
Cost Effective ◽  
Elemental Powder ◽  
Blended Elemental ◽  
Blended Elemental Powder

Microstructure and Mechanical Properties of in Situ Ti/TiB MMCs Produced by a Blended Elemental Powder Metallurgy Method

1996 ◽  
Vol 127-131 ◽  
pp. 423-430 ◽  
Author(s):  
Zhong Yun Fan ◽  
Hai Jun Niu ◽  
Alfred Peter Miodownik ◽  
T. Saito ◽  
Brian Cantor
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Elemental Powder ◽  
Powder Metallurgy Method ◽  
Blended Elemental ◽  
Microstructure And Mechanical Properties ◽  
Blended Elemental Powder

Microstructure evolution and mechanical properties of LaB6-modified Ti2AlNb alloy fabricated by blended elemental powder metallurgy

2020 ◽  
Vol 369 ◽  
pp. 334-344 ◽  
Author(s):  
Ningbo Zhang ◽  
Xiuli Han ◽  
Dongli Sun ◽  
Siran Liu ◽  
Hao Liu ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Microstructure Evolution ◽  
Elemental Powder ◽  
Blended Elemental ◽  
Ti2alnb Alloy ◽  
Blended Elemental Powder
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