scholarly journals Microstructural refinement and mechanical properties improvement of elemental powder metallurgy processed Ti-46.6Al-1.4Mn-2Mo alloy by carbon addition

2001 ◽  
Vol 32 (2) ◽  
pp. 251-259 ◽  
Author(s):  
H. S. Park ◽  
S. K. Hwang ◽  
C. M. Lee ◽  
Y. C. Yoo ◽  
S. W. Nam ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Elemental Powder ◽  
Carbon Addition ◽  
Microstructural Refinement

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.

Effect of Carbon Addition on the Microstructure and Mechanical Properties of the In Situ Formed TiAl/Ti2AlC Composites

2011 ◽  
Vol 217-218 ◽  
pp. 680-683
Author(s):  
Jian Feng Zhu ◽  
Wen Wen Yang ◽  
Yi Ping Gong
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Flexural Strength ◽  
Synthesis Method ◽  
Elemental Powder ◽  
Hot Press ◽  
Carbon Addition ◽  
Rockwell Hardness ◽  
Powder Mixtures

TiAl/Ti2AlC composites were successfully fabricated by hot-press-assisted reactive synthesis method from elemental powder mixtures of Ti, Al and C. The effect of C addition on the microstructures and mechanical properties of TiAl/Ti2AlC composites was investigated in detail. The results show that the Rockwell hardness, flexural strength and fracture toughness of the composites are modified by incorporation of in situ formed Ti2AlC. When the C content was 0.44 wt %, the flexural strength and the fracture toughness reach the maximum values of 658.7 MPa and 10.03 MPa•m1/2, respectively. The reinforcing mechanism was also discussed.

IN-861

Alloy Digest ◽  
1974 ◽  
Vol 23 (9) ◽  
Keyword(s):  
Mechanical Properties ◽  
Fracture Toughness ◽  
Powder Metallurgy ◽  
Physical Properties ◽  
Tensile Properties ◽  
Heat Treating ◽  
Elemental Powder ◽  
Powder Metal ◽  
International Nickel Company ◽  
Metallurgy Steel

Abstract IN-861 is a mixed elemental powder metallurgy steel designed for use in the as-sintered condition. It achieves its good mechanical properties by hardening during normal cooling in most commercial sintering furnaces. This datasheet provides information on composition, physical properties, microstructure, hardness, elasticity, and tensile properties as well as fracture toughness and fatigue. It also includes information on heat treating, machining, and powder metal forms. Filing Code: SA-308. Producer or source: International Nickel Company Inc..

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

The Influence of Carbon Addition on the Physical and Mechanical Properties of WC-Co Sintered Powders

2012 ◽  
Vol 59 (2) ◽  
Author(s):  
Ahmad Aswad Mahaidin ◽  
Mohd Asri Selamat ◽  
Samsiah Abdul Manaf ◽  
Talib Ria Jaafar
Keyword(s):  
Mechanical Properties ◽  
Grain Size ◽  
Powder Metallurgy ◽  
Grain Growth ◽  
Rupture Strength ◽  
Physical And Mechanical Properties ◽  
Cobalt Content ◽  
Powder Metallurgy Technique ◽  
Densification Process ◽  
Carbon Addition

The mechanical properties of WC-Co are highly dependent on its cobalt content, density and grain size of the WC particles. Addition of free carbon during the consolidation of process is said to improve the densification process and inhibit grain growth. However, there are still plenty of works needs to be done regarding this matter to support the fact. Therefore, this study is to evaluate the effect of carbon addition on the physical and mechanical properties of WC-Co-C sintered powders. The WC-Co-C sample is fabricated using powder metallurgy technique, in which the powders were uniaxially pressed at 625 MPa and cold-isostatic pressed at 200 MPa. Then, the sample is sintered in nitrogen-based atmosphere at temperature range of 1350-1450C. The physical and mechanical properties of the WC-Co sintered powders were analysed. It is found that WC-Co-C has a relatively higher density and hardness but exhibit lower transverse rupture strength compared to WC-Co.

Effect of Carbon Addition on the Microstructure and Properties of M3:2 High Speed Steels Processed by Powder Metallurgy

2007 ◽  
Vol 29-30 ◽  
pp. 153-158 ◽  
Author(s):  
R. Zhou ◽  
D. Wang ◽  
Jun Shen ◽  
J. Sun
Keyword(s):  
Mechanical Properties ◽  
Powder Metallurgy ◽  
Oxygen Content ◽  
High Speed ◽  
Sintering Temperature ◽  
Experimental Results ◽  
Full Density ◽  
Bend Strength ◽  
Carbon Addition ◽  
Sintered Steels

M3:2 high speed steels with and without carbon addition were prepared by using powder metallurgy at sintering temperature between 1210 and 1280 °C. Densification, microstructure and mechanical properties of M3:2 high speed steels were investigated. Experimental results show that with 0.4wt% carbon addition, full density high speed steels were obtained at temperatures in the range 1240-1260 °C which is 40 °C lower than that of the undoped counterparts, leading to a sintering window expanded by 10 to 20 °C. By the addition of 0.4wt% carbon, the sintered steels show attractive combinations of bend strength and hardness over those of M3:2 steels without carbon addition. The results reveal that the addition of carbon will not only lower the sintering temperature and oxygen content, but also improve the mechanical properties of the sintered steels.

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