Effect of rare earth elements on the microstructures and properties of powder metallurgical titanium alloys PDF Download

Author: Yong Liu
Publisher:
ISBN:
Category : Oxidation
Languages : en
Pages : 87

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Author: C. R. Whitsett
Publisher:
ISBN:
Category :
Languages : en
Pages : 68

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Book Description
The influence of additions of 0.1 wt% Er, 0.02 wt% Y, 0.05 wt% Y, and 0.038 wt% Y2O3 on the room-temperature tensile properties and fracture toughness of Ti-6Al-4V was studied. The alloys were cast by consumable-electrode arc-melting in vacuum. Er and Y were added in the form of Ti-25Er and Ti-25Y master alloys, and Y2O3 was added in the form of a fine powder. The alloys, after being forged and rolled, had only about half the nominal concentrations of rare-earth additives. The rolled plates were given various heat treatments to observe the combined effects of microstructure and rare-earth additives. The rare-earths effect grain refinement. The room-temperature tensile properties and fracture toughness of Ti-6Al-4V are not significantly altered by the rare-earths. The crystallographic texture developed during rolling also is unaffected by the rare-earth additives, although Y and Y2O3 effect an increased sharpness of near-transverse-basal texture components in alpha-beta annealed alloy. The uniform elongation of Ti-6Al-4V under tensile stress at high temperatures is increased by Er and Y additions. The high-temperature compressive stress-strain characteristics of heat treated Ti-6Al-4V are not altered by Er and Y. (Author).

Author: J. C. Williams
Publisher: Springer Science & Business Media
ISBN: 147571758X
Category : Technology & Engineering
Languages : en
Pages : 813

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Author: Ma Qian
Publisher: Trans Tech Publications Ltd
ISBN: 3038138843
Category : Technology & Engineering
Languages : en
Pages : 350

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The conference upon which this work is based fully achieved its objectives and turned out to be the largest international gathering dedicated solely to the topic of titanium processing via powder metallurgy. Volume is indexed by Thomson Reuters CPCI-S (WoS). The 50 peer-reviewed papers are grouped into 8 chapters: PM titanium alloy design and processing developments; Powder Production; Effect of Impurities; Metal Injection Moulding of Titanium; Biomedical Titanium Alloys; Titanium Composites; Forging and Equal-Channel Angular Pressing of Titanium; Laser Cladding, Welding, Slip Casting and Other Processing Developments.

Author: Ma Qian
Publisher: Butterworth-Heinemann
ISBN: 0128009101
Category : Technology & Engineering
Languages : en
Pages : 649

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Book Description
Titanium Powder Metallurgy contains the most comprehensive and authoritative information for, and understanding of, all key issues of titanium powder metallurgy (Ti PM). It summarizes the past, reviews the present and discusses the future of the science and technology of Ti PM while providing the world titanium community with a unique and comprehensive book covering all important aspects of titanium powder metallurgy, including powder production, powder processing, green shape formation, consolidation, property evaluation, current industrial applications and future developments. It documents the fundamental understanding and technological developments achieved since 1937 and demonstrates why powder metallurgy now offers a cost-effective approach to the near net or net shape fabrication of titanium, titanium alloys and titanium metal matrix composites for a wide variety of industrial applications. Provides a comprehensive and in-depth treatment of the science, technology and industrial practice of titanium powder metallurgy Each chapter is delivered by the most knowledgeable expert on the topic, half from industry and half from academia, including several pioneers in the field, representing our current knowledge base of Ti PM. Includes a critical review of the current key fundamental and technical issues of Ti PM. Fills a critical knowledge gap in powder metal science and engineering and in the manufacture of titanium metal and alloys

Author: E. W. Collings
Publisher: ASM International(OH)
ISBN:
Category : Technology & Engineering
Languages : en
Pages : 296

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Author: Charles R. Whitsett
Publisher:
ISBN:
Category :
Languages : en
Pages : 100

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The influence of different concentrations of metallic yttrium, erbium, and mischmetal (MM) on the microstructure and room-temperature mechanical properties of Ti-6Al-4V was studied. Alloy ingots containing 0.02-0.3 wt% Y, 0.1-2.0 wt% Er, and 0.01-0.2 wt% MM were cast, forged, hot-rolled, and mill-annealed in the alpha-beta and beta fields. The metallic rare-earth additions produce a uniform dispersion of small (

Author: Artur Shugurov
Publisher: Mdpi AG
ISBN: 9783036522838
Category : Technology & Engineering
Languages : en
Pages : 220

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Book Description
Titanium and its alloys are widely used engineering materials within the aerospace, automotive, energy and chemical industries. Their unique combination of high strength-to-weight ratio, strong resistance to creep, excellent corrosion resistance, and low heat conductivity makes them suitable for a wide range of applications. A large variety of microstructures, including lamellar, martensite, equiaxed globular and bimodal (duplex) microstructures can be obtained in titanium alloys depending on the thermomechanical processing routes. Despite a large amount of work in the field of investigation of microstructure evolution and mechanical properties of titanium alloys, detailed studies of the effect of their microstructure on the mechanical behavior are still necessary because of ever-increasing demands for structural materials to optimize their properties for different applications by varying processing parameters and resulting microstructures. This Special Issue is focused on various aspects of microstructure evolution in titanium alloy samples obtained using traditional and additive technologies and subjected to different processing techniques as well as on the relation between their microstructure and mechanical behavior. The presented original articles cover the areas of preparation and experimental characterization of titanium alloys as well as computer simulation of their mechanical behavior under different loading conditions.

Author: C. R. Whitsett
Publisher:
ISBN:
Category : Erbium
Languages : en
Pages : 83

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Book Description

Author: Huiping Tang
Publisher: Trans Tech Publications Ltd
ISBN: 3035731632
Category : Technology & Engineering
Languages : en
Pages : 284

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Book Description
Powder metallurgy of titanium and titanium alloys has been increasingly attracting attention of engineers and researchers for over four decades and the 4th International Conference on Titanium Powder Metallurgy & Additive Manufacturing (PMTi 2017, Xi’an, China, from 8 to 10 September 2017) was an event that promoted the progress in this area of the materials science and processing technologies.