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refractory metals

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240583
EISBN: 978-1-62708-251-8
... Abstract The refractory metals include niobium, tantalum, molybdenum, tungsten, and rhenium. These metals are considered refractory because of their high melting points, high-temperature mechanical stability, and resistance to softening at elevated temperatures. This article discusses...
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Published: 01 June 2008
Fig. 31.1 Temperature versus tensile strength for refractory metals. Source: Ref 2 More
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Published: 01 June 2008
Fig. 31.2 Temperature versus elastic modulus for refractory metals. Source: Ref 2 More
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Published: 01 June 2008
Fig. 31.3 Ductile-to-brittle transition for recrystallized refractory metals. Source: Ref 3 More
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Published: 01 June 2008
Fig. 31.9 Stress rupture at 2200 °C (4000 °F) for several refractory metals More
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Published: 01 November 2007
Fig. 7.39 Thermogravimetric data for refractory metals, such as, Mo, TZM, Nb, Ta, and V in comparison with conventional alloys in a sulfidizing environment with high sulfur and low oxygen potentials tested at 871 °C (1600 °F). Source: Ref 72 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170308
EISBN: 978-1-62708-297-6
... Abstract This article discusses the role of alloying in the production and use of common refractory metals, including molybdenum, tungsten, niobium, tantalum, and rhenium. It provides an overview of each metal and its alloys, describing the compositions, properties, and processing...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 1997
DOI: 10.31399/asm.tb.wip.t65930353
EISBN: 978-1-62708-359-1
... Abstract This article discusses the weldability and fusion weld properties of refractory metal alloys. The alloys discussed include tantalum, niobium, rhenium, molybdenum, and tungsten. molybdenum niobium rhenium tantalum tungsten weldability THE REFRACTORY METALS, which include...
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Published: 01 November 2007
Fig. 3.3 Vapor pressures of several refractory metal oxides exhibiting high vapor pressures at temperatures above 1000 °C (1830 °F). Source: Ref 4 More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.t53060315
EISBN: 978-1-62708-261-7
...-resistance alloys, superalloys, refractory metals, low-melting-point metals, reactive metals, precious metals, rare earth metals, and metalloids or semimetals. It also provides a brief summary on special-purpose materials, including uranium, vanadium, magnetic alloys, and thermocouple materials. light...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1984
DOI: 10.31399/asm.tb.mpp.t67850509
EISBN: 978-1-62708-260-0
... Abstract This appendix provides a list of etch compositions and procedures that reveal the macrostructure of aluminum, beryllium, bismuth, antimony, cobalt, copper, lead, magnesium, nickel, tin, titanium, zinc, and their respective alloys as well as iron, steel, noble metals, refractory metals...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 30 September 2023
DOI: 10.31399/asm.tb.stmflw.t59390284
EISBN: 978-1-62708-459-8
... to minimize friction and die wear when extruding steel, aluminum, copper, and refractory metals. bambooing container friction die wash direct extrusion extrusion lubricants extrusion pressure fir-tree effect forward extrusion glass lubrication hot extrusion hydrostatic extrusion indirect...
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Published: 01 March 2002
Fig. 10.1 Typical speeds for face milling of selected superalloys versus some steels, titanium, and refractory metal alloys More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170596
EISBN: 978-1-62708-297-6
... material of silver, copper, or refractory metals and their carbides. The refractory-base and silver-base contacts are used in switching devices operated in air. Copper-base composite contacts are used in vacuum and oil switching devices. Table 5 presents the compositions and properties of various...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2009
DOI: 10.31399/asm.tb.bcp.t52230131
EISBN: 978-1-62708-298-3
... the larger refractory metal. MBe<sub>5</sub> This compound has the Pearson symbol hP 6, and the binary prototype is CaCu 5 . It has been observed in beryllium metal as an impurity phase but has not been investigated as a single-phase intermetallic. This compound has been found in the scandium...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 2013
DOI: 10.31399/asm.tb.ems.t53730139
EISBN: 978-1-62708-283-9
... powder processing sheet forming Liquid to Solid Processing Metals usually are cast into molds of sand, another refractory material, or another metal. Steel and iron are cast into sand or refractory molds. Gold, silver, and refractory metals are cast into molds of high-temperature ceramics...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000059
EISBN: 978-1-62708-313-3
... Abstract This chapter discusses the typical compositional ranges of superalloys, the role of major base metals (iron, cobalt, and nickel), and the effects of common alloying additions. It describes how chromium, aluminum, and titanium as well as refractory elements, grain-boundary elements...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000001
EISBN: 978-1-62708-313-3
... of composition and processing make the cost of superalloys typically in the range of 30 to 200 times that of plain stainless steel ( Ref 2 ). Although there are a number of other material groups that can be used at high temperatures, such as ceramics and refractory metal alloys, superalloys are unsurpassed...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 1995
DOI: 10.31399/asm.tb.sch6.t68200187
EISBN: 978-1-62708-354-6
... with the atmosphere, the furnace and ladle refractories, and the molding media. Proper control is necessary to minimize defects such as inclusions, porosity, hot tears, and adhering sand defects. In addition, the final properties and quality of the metal are strongly influenced by the method of melting and pouring...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 January 1998
DOI: 10.31399/asm.tb.ts5.t65900109
EISBN: 978-1-62708-358-4
... capacity, quenching method, speed, computerization, and so on. In cold-wall furnaces, the electric heating elements are located inside the retort. The heating elements can be made of a refractory metal, such as tungsten, molybdenum, or tantalum or from graphite rods or cloth. Properties...