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weldments

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Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720411
EISBN: 978-1-62708-305-8
... Abstract Weldments made by the various welding processes may contain discontinuities that are characteristic of that process. This chapter discusses the different welding processes as well as the discontinuities typical of each process. It provides a detailed discussion on the methods of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130503
EISBN: 978-1-62708-284-6
... weldment. These include poor workmanship, a variety of hydrogen-assisted cracking failures, stress-corrosion cracking, fatigue, and solidification cracking in steel welds. Hydrogen-assisted cracking can appear in four common forms, namely underbead or delayed cracking, weld metal fisheyes, ferrite vein...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290099
EISBN: 978-1-62708-306-5
... section provides information on the residual stresses and distortion that remain after welding. The focus then shifts to distortion control of weldments. Inclusions and cracking are discussed in detail. The chapter also discusses the causes for reduced fatigue strength of a component by a weld: stress...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2018
DOI: 10.31399/asm.tb.fibtca.9781627082532
EISBN: 978-1-62708-253-2
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280149
EISBN: 978-1-62708-267-9
.... After welding, some applications for which a weldment is designed may demand different properties of the weld joint from those exhibited by the bare metals. Most solid-solution (nonprecipitation-hardening) superalloys have sufficient ductility to meet the preceding fusion welding requirements. The...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2001
DOI: 10.31399/asm.tb.aub.t61170242
EISBN: 978-1-62708-297-6
..., austenitized and quench-annealed from 1010 °C (1850 °F) or above. Source: Ref 3 The 0.7% C (min) of grades D and E-1 may be used to minimize carbide precipitation in heavy castings or in weldments, and similar low carbon contents are specified for welding filler metal. Carbides form in castings that...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 December 2008
DOI: 10.31399/asm.tb.ssde.t52310201
EISBN: 978-1-62708-286-0
... strictly forbidden since it is required to eliminate moisture. Joint design does not differ in principle from that of other steel weldments. There is, however an increased need for dimensional uniformity for the alloys susceptible to intermetallic precipitation since minimizing time at temperature is a...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 July 2000
DOI: 10.31399/asm.tb.fec.9781627083027
EISBN: 978-1-62708-302-7
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280203
EISBN: 978-1-62708-267-9
... fusion welding or solid-state bonding to remove residual smut, which can cause poor-quality weldments. There is less need for pickling prior to arc, electron beam, or other fusion welding, unless an inspection of the test weldments reveals porosity or inclusions that are a result of pickup from the...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2010
DOI: 10.31399/asm.tb.scm.t52870101
EISBN: 978-1-62708-314-0
...-up rates in an autoclave. When a steel tool fails in service, it is usually due to a cracked weldment. Aluminum, by contrast, is much lighter and has a much higher coefficient of thermal conductivity and and a much higher CTE. It is also much easier to machine than steel, but it is more difficult...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 October 2011
DOI: 10.31399/asm.tb.mnm2.9781627082617
EISBN: 978-1-62708-261-7
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130087
EISBN: 978-1-62708-284-6
... acid, was in contact with the weldment. There are some cracks on one side of the weld, while the other side is free of cracks. What kind of cracks are these? The crack path is intergranular ( Fig. 20 ). The micrograph in Fig. 21 was taken after an ASTM International test, and it shows ditching...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 August 1999
DOI: 10.31399/asm.tb.lmcs.9781627082914
EISBN: 978-1-62708-291-4
Series: ASM Technical Books
Publisher: ASM International
Published: 01 September 2008
DOI: 10.31399/asm.tb.fahtsc.t51130043
EISBN: 978-1-62708-284-6
... ) was the result of weld bead undercutting and poor weldment design. Fatigue cracking initiated at the site of the weld toe undercut. This location was a highly stressed area and the location of a large mechanical stress-concentration factor because of the weld toe undercut. Typical causes of...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280211
EISBN: 978-1-62708-267-9
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 April 2013
DOI: 10.31399/asm.tb.imub.t53720267
EISBN: 978-1-62708-305-8
..., shafts, drives, and press columns Power equipment: turbine forgings, generator rotors, pressure piping, weldments, pressure vessels, nuclear fuel elements, and other reactor components Jet-engine parts: turbine and compressor forgings, and gear blanks Aircraft components: forging stock, frame...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280135
EISBN: 978-1-62708-267-9
... weldments should immediately follow welding of precipitation-hardenable alloys where highly restrained joints are involved. If the configuration of the weldment does not permit high-temperature annealing, aging can be used for stress relieving the joints. When applied to superalloys, annealing implies...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2012
DOI: 10.31399/asm.tb.pdub.t53420117
EISBN: 978-1-62708-310-2
... temperature gradient zone melting. Under some cooling conditions, the layers appear to be partially missing on the back. This and other mechanisms related to the peritectic transformation complicate the interpretation of the microstructures found in high-speed steels and their weldments. Fig. 6.16...
Book Chapter

Series: ASM Technical Books
Publisher: ASM International
Published: 01 March 2002
DOI: 10.31399/asm.tb.stg2.t61280079
EISBN: 978-1-62708-267-9
... improved casting procedures and weld repair processes, in conjunction with the advent of HIP, large, complex investment-cast parts have been replacing forgings and weldments in aircraft engines. These investment-cast parts may attain dimensions as large or larger than about 60 in. (150 cm) in diameter. See...
Series: ASM Technical Books
Publisher: ASM International
Published: 01 November 2011
DOI: 10.31399/asm.tb.jub.t53290279
EISBN: 978-1-62708-306-5
... design requirements, such as mechanical properties or corrosion resistance, and (2) the candidate filler metal must fulfill the weldability criteria with respect to dilution, T m , and other physical property requirements of the weldment. The Schaeffler diagram is commonly used to predict weld...