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discontinuity-free weldment

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Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002367
EISBN: 978-1-62708-193-1
...-containing weldment and a discontinuity-free weldment. References 1. Munse W.H. , Wilbur T.W. , Tellalian M.L. , Nicoll K. , and Wilson K. , “Fatigue Characterization of Fabricated Ship Details for Design,” Ship Structure Committee, SSC-318 , 1983 2. Ang A.-H...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003509
EISBN: 978-1-62708-180-1
... community now tends to make specific distinctions between the terms discontinuity and defect (or flaw). Neither construction materials nor engineered structures are free from imperfections, and welds and weld repairs are not exceptions. All welded structures contain imperfections, to some level...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001472
EISBN: 978-1-62708-173-3
... on the service requirements of a particular welded structure, as well as on the properties of the material involved. (See the article “Fitness-for-Service Assessment of Welded Structures” in this Section for more information.) Neither construction materials nor engineered structures are free from...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001343
EISBN: 978-1-62708-173-3
...-penetration weld and a macroscopically homogeneous and defect-free weld pool. The properties of titanium alloys can be strongly affected by the phases present in the microstructure, which are largely controlled by the weld metal composition. In this example, aluminum stabilizes the hexagonal close-packed...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006447
EISBN: 978-1-62708-190-0
.... All standards covering VI recommend that the surface under examination should be free from paint, debris, grease, dirt, oil, scale, slag, and other contaminants capable of masking possible discontinuities and thus obscuring clear view of the inspected area. Sometimes the presence of certain...
Series: ASM Handbook
Volume: 13B
Publisher: ASM International
Published: 01 January 2005
DOI: 10.31399/asm.hb.v13b.a0003831
EISBN: 978-1-62708-183-2
... resistance in high-temperature environments. Gold filler alloys are used in vacuum and high-temperature heat-resisting applications (e.g., electronics and engine components), because they are generally free from volatiles and have exceptional resistance to oxidation and other types of corrosion. Gold...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001405
EISBN: 978-1-62708-173-3
... (50 °F/s), 4 ppm of hydrogen on the wire surface is shown to have caused HIC. To be securely free of HIC, the hydrogen had to be maintained at levels below 3 ppm. By adjusting the welding procedures, preheat temperatures, or both, in order to retard the cooling rate at 540 °C (1000 °F) to less than 20...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006468
EISBN: 978-1-62708-190-0
...-wave current, used in magnetization with prods and dry magnetic particles, provides the highest sensitivity for discontinuities that are wholly below the surface, such as those in castings and weldments. Magnetization employing surges of direct current can be used to increase the strength of magnetic...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001425
EISBN: 978-1-62708-173-3
... can be restored by fusion welding with a nonhardenable filler metal (ERNiCrMo-3) without cracking ( Ref 2 ). Thus, crack-free welds can sometimes be accomplished in very-difficult-to-weld materials where residual shrinkage stresses can be kept low and cooling rates are slow. Both conditions occur...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002386
EISBN: 978-1-62708-193-1
... -direction. However, because the crack itself is stress free, no contraction occurs behind the crack front. Further away from the crack, the stresses are low; therefore, the contraction is small. Thus, there is a thin cylindrical-like zone of material at the crack tip wanting to contract a great deal, while...
Series: ASM Handbook
Volume: 17
Publisher: ASM International
Published: 01 August 2018
DOI: 10.31399/asm.hb.v17.a0006455
EISBN: 978-1-62708-190-0
... or distorted picture of the relationship of the flaws to testpiece shape. For example, a crack in the fillet of a T-shape section of a casting or in a weld in a T-shape weldment is most likely to be revealed when the radiation is directed along the bisector of the angle between the legs of the section, because...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002384
EISBN: 978-1-62708-193-1
... is to soak the welded sample for a few hours at 150 °C (300 °F) before testing. This is referred to as hydrogen release heat treatment. The thermal and strain cycles that accompany welding can give rise to “dynamic” strain aging embrittlement. This is caused by the diffusion of carbides and free nitrogen...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005628
EISBN: 978-1-62708-174-0
... imperfections are pertinent only to resistance spot welds and not seam welds. Seam welds, in most cases, tend to be continuous welds. For example, items 4, 7, and 9 are some of the attributes that generally pertain to spot welds. A surface free of visible defects is always a requirement. Surface defects...
Series: ASM Handbook
Volume: 2A
Publisher: ASM International
Published: 30 November 2018
DOI: 10.31399/asm.hb.v02a.a0006510
EISBN: 978-1-62708-207-5
... , 1986 34. Burch W.L. , The Effect of Welding Speed on Strength of 6061-T4 Aluminum Joints , Weld. J. , Vol 37 ( No. 7 ), 1958 , p 361-s 35. Brungraber R.J. and Nelson F.G. , Effect of Welding Variables on Aluminum Alloy Weldments , Weld. J. , Vol 52 ( No. 3...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... of the influence of surface tension is the tendency of free liquid, such as a droplet of water, to contract into a sphere. In such a droplet, surface tension is counterbalanced by the internal hydrostatic pressure of the liquid. When the liquid comes into contact with a solid surface, the cohesive force...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001342
EISBN: 978-1-62708-173-3
... … … 556 244000 11 5.4 Cu Li Mg Si Zn Binary aluminum 16.6 9.0 8.0 42.4 2.3 Source: Ref 2 , 3 Table 2 Selected alloy 625 compositions used in weldability study Alloy No. Composition, % C Cr Fe Mn Mo Nb Ni P S Si Ti Niobium-free 1 0.006...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002363
EISBN: 978-1-62708-193-1
... Transmission electron microscopy replica 0.0001 2 Tension Compact type with blunt notch 316 stainless steel Air and coal process solvent Optical microscope and Krak Gage 0.25 3 Bending Plate HT-80 steel weldment Sea water Computer image … 4 Mode II Notched plate 4340 steel Air...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003621
EISBN: 978-1-62708-182-5
... Deaerator tanks, the vessels that control free oxygen and other dissolved gases to acceptable levels in boiler feedwater, are subject to a great deal of corrosion and cracking. Several years ago, there were numerous incidences of deaerator tank failures that resulted in injury to personnel and property...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001415
EISBN: 978-1-62708-173-3
...) Same heat treatment as (a); 690×. (c) Aged at 593 °C (1100 °F) for 8 h; 275×. (d) Same heat treatment as (c); 690×. Source: Ref 12 In many alloy systems, weldability is determined by the capability of the alloy to produce a weld that is free of discontinuities or defects. Defects that may...
Series: ASM Desk Editions
Publisher: ASM International
Published: 01 December 1998
DOI: 10.31399/asm.hb.mhde2.a0003231
EISBN: 978-1-62708-199-3
... tension is the tendency of free liquid, such as a droplet of water, to contract into a sphere. In such a droplet, surface tension is counterbalanced by the internal hydrostatic pressure of the liquid. When the liquid comes into contact with a solid surface, the cohesive force responsible for surface...