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iron-nickel superalloys

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Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240563
EISBN: 978-1-62708-251-8
... Abstract Superalloys are nickel, iron-nickel, and cobalt-base alloys designed for high-temperature applications, generally above 540 deg C. This chapter covers the metallurgy, composition, and properties of cast and wrought superalloys. It provides information on melting, heat treating...
Image
Published: 01 March 2002
Fig. 6.8 Forging a turbine shaft of A-286 iron-nickel-base superalloy More
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Published: 01 March 2002
Fig. 6.18 A-286 iron-nickel base superalloy exhaust cone, (a) showing crack location after bulge forming, (b) and (c) showing layouts used in cutting cone blanks from 0.04 to 0.05 in. (1 to 1.3 mm) sheet More
Image
Published: 01 March 2002
Fig. 6.19 Backward spinning of A-286 iron-nickel-base superalloy roll-forged tube. (Dimensions in inches) More
Image
Published: 01 March 2002
Fig. 10.4 Original (top left) tool design for A-286 iron-nickel-base superalloy and, (bottom left) improved tool design for Rene 41 to broach same slot (right) in a gas turbine (dimensions in inches) More
Image
Published: 01 March 2002
Fig. 12.47 Fatigue life of N-155 iron-nickel-base superalloy in the HCF range under reversed bending at various temperatures from room temperature to 816 °C (1500 °F) More
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.sap.t53000009
EISBN: 978-1-62708-313-3
... Abstract This chapter provides a brief overview of nickel-iron-base, cobalt-base, and nickel-base superalloys, discussing their basic metallurgy and defining characteristics. coefficient of thermal expansion superalloys SUPERALLOYS ARE CLASSIFIED according to the main alloying...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280025
EISBN: 978-1-62708-267-9
... prime gamma prime microstructure superalloys Groups, Crystal Structures, and Phases Superalloy Groups As noted earlier, there are three groups of superalloys (iron-nickel-, nickel-, and cobalt-base), which are further subdivided into cast and wrought (where wrought includes powder...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280001
EISBN: 978-1-62708-267-9
...? Superalloys are nickel-, iron-nickel-, and cobalt-base alloys generally used at temperatures above about 1000 °F (540 °C). The iron-nickel-base superalloys such as the popular alloy IN-718 are an extension of stainless steel technology and generally are wrought. Cobalt-base and nickel-base superalloys may...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170290
EISBN: 978-1-62708-297-6
... Abstract This article discusses the composition, structure, and properties of iron-nickel-, nickel-, and cobalt-base superalloys and the effect of major alloying and trace elements. It describes the primary and secondary roles of each alloying element, the amounts typically used...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
... special preheat or postheat. Furthermore, interpass temperature control during welding normally is not critical. On the other hand, the defining characteristic of many iron-nickel- and nickel-base superalloys is the existence of a precipitate phase, which is dispersed in a matrix. The precipitation...
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
... Abstract Superalloys, although not strictly defined, are generally regarded as high-performance alloys based on group VIII elements (nickel, cobalt, or iron, with a high percentage of nickel) to which a multiplicity of alloying elements have been added. The defining feature of a superalloy...
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 March 2002
DOI: 10.31399/asm.tb.stg2.t61280091
EISBN: 978-1-62708-267-9
... the principal driver for superalloy development, and the systems of the time were geared for wrought products. Cobalt-Base versus Iron-Nickel- and Nickel-Base Superalloys Cast cobalt-base superalloys such as Vitallium were interesting and extremely useful in components where the highest strengths were...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280011
EISBN: 978-1-62708-267-9
... Abstract This chapter provides basic materials selection information for iron-nickel-, nickel-, and cobalt-base superalloys. It discusses mechanical and physical properties, the effect of service temperature, and the comparative strengths of wrought and cast product forms. It includes several...
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Published: 01 March 2002
Fig. 12.31 1000 h rupture strength of selected wrought cobalt- and iron-nickel-base superalloys vs. temperature. Note the inclusion of iron-base ODS superalloy MA-956 for comparison. More
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280189
EISBN: 978-1-62708-267-9
...). Overview of Superalloy Machining General Aspects Superalloys generally are classified as having poor machinability. This is not surprising, because the very characteristics that render superalloys good high-temperature materials are responsible for their poor machining behavior. The iron-nickel...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280357
EISBN: 978-1-62708-267-9
... others) that generally are brittle and detrimental to the mechanical properties of superalloys, particularly nickel-base superalloys. These phases can form in iron-nickel-and cobalt-base superalloys as well. Based on early studies on stainless steels, these phases, and particularly σ phase, can...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 June 2008
DOI: 10.31399/asm.tb.emea.t52240547
EISBN: 978-1-62708-251-8
... companion metals, making cobalt approximately 100 times more costly than iron and approximately 8 times more costly than nickel. The largest use of cobalt is in superalloys that are used to make parts for gas turbine engines. Cobalt is also used in corrosion- and wear-resistant alloys, highspeed tool steels...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280365
EISBN: 978-1-62708-267-9
... , Mater. Sci. Eng. , Vol 16 , 1974 , p 5 – 45 10.1016/0025-5416(74)90135-9 • Sullivan C.P. and Donachie M.J. , a series of review articles on nickel-base, cobalt-base, and iron-nickel-base superalloys in Met Eng. Q. , Vol 7 ( No. 2 ), 1967 , p 36 – 45 ; Vol 9 ( No. 2...