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weldment failure

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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
...-load-carrying cruciform weldment) are investigated with the aid of a computer simulation of weldment fatigue behavior. This weld geometry is used as an example of fatigue behavior of weldments where fatigue failure initiates at a weld toe (i.e., “good” weldments). The behavior of “Nominal” and “Ideal...
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
... weldments, and, with rare exceptions, those stresses are at least equivalent to the yield strength of the weakest component of the joint. Because most weld metals are stronger than the base metal, the residual stresses are close to the yield strength of the base plate. Often, it is possible to minimize the...
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
... Abstract This article briefly reviews the general causes of weldment failures, which may arise from rejection after inspection or failure to pass mechanical testing as well as loss of function in service. It focuses on the general discontinuities observed in welds, and shows how some...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001471
EISBN: 978-1-62708-173-3
... Abstract Weldments exhibit special microstructural features that need to be recognized and understood in order to predict acceptable corrosion service life of welded structures. This article describes some of the general characteristics associated with the corrosion of weldments. It emphasizes...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002408
EISBN: 978-1-62708-193-1
... the fatigue strength of aluminum alloy weldments. The progressive failure mechanisms that operate in welded joints are no different from those in the metals which they join. However, welds are usually located at a structural (global) stress concentration, typically introduce a severe notch (i.e...
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
... Abstract Corrosion of carbon steel weldments can be due to metallurgical effects, such as preferential corrosion of the heat-affected zone (HAZ) or weld metal, or it can be associated with geometrical aspects, such as stress concentration at the weld toe, or creation of crevices due to joint...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003622
EISBN: 978-1-62708-182-5
... effects of gas-tungsten arc weld shielding gas composition and heat-tint oxides on corrosion resistance are also discussed. The article explains microbiological corrosion of butt welds in water tanks with the examples. In addition, it provides information on corrosion of ferritic stainless steel weldments...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005617
EISBN: 978-1-62708-174-0
... determining the distribution of residual stresses in a weldment by observing the pattern of hydrogen-induced cracks ( Ref 6 ). Failures caused by instability or buckling sometimes occur in metal structures composed of slender bars or thin plates, when subjected to compressive axial loading, bending, or...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001475
EISBN: 978-1-62708-173-3
... various steels has been studied, and attempts have been made to develop a technique for determining the distribution of residual stresses in a weldment by observing the pattern of hydrogen-induced cracks ( Ref 1 ). Failures caused by instability or buckling sometimes occur in metal structures composed...
Series: ASM Handbook
Volume: 6A
Publisher: ASM International
Published: 31 October 2011
DOI: 10.31399/asm.hb.v06a.a0005613
EISBN: 978-1-62708-174-0
... in a weldment. It reviews the heat-affected and fusion zones of single-pass and multi-pass weldments. The article also includes a discussion on the welds in alloy systems, such as stainless steels and aluminum-base, nickel-base, and titanium-base alloys. aluminum-base alloys casting fusion...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006785
EISBN: 978-1-62708-295-2
... presence of a tensile stress ( Fig. 1 ). The SCC failures are insidious and potentially dangerous because the stresses at which SCC can occur are relatively low (often less than the yield strength or fatigue strength of a metal), and cracks initiate and propagate in conditions when none would be expected...
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
... Standard Fracture Mechanics Toughness Tests,” BS 7448 Part 1, British Standards Institution, London 34. Squirrell S.J. , Pisarski H.G. , and Dawes M.G. , “Recommended Procedure for the Crack-tip Opening Displacement (CTOD) Testing of Weldments,” TWI Research Report 311, 1986 35...
Series: ASM Handbook
Volume: 13A
Publisher: ASM International
Published: 01 January 2003
DOI: 10.31399/asm.hb.v13a.a0003623
EISBN: 978-1-62708-182-5
... Abstract Corrosion resistance can usually be maintained in the welded condition by balancing alloy compositions, shielding molten and hot metal surfaces, and choosing the proper welding parameters. This article describes some of the metallurgical factors that affect corrosion of weldments. It...
Series: ASM Handbook
Volume: 6
Publisher: ASM International
Published: 01 January 1993
DOI: 10.31399/asm.hb.v06.a0001341
EISBN: 978-1-62708-173-3
... Liquation in 18-Ni Maraging Steel Weldments , Weld J. , Sept 1967 , p 411s - 422s 19. Yeniscavitch W. , Joining , Superalloys II , Sims C.T. , Stoloff N.S. , and Hagel W.C. , Ed., John Wiley & Sons , 1987 , p 495 – 516 20. Hucke E.E. and Udin H...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002402
EISBN: 978-1-62708-193-1
... heating the base metal to the intercritical zone. Very fine-grain material in this zone tends to have poor high-temperature strength. Under fatigue and creep-fatigue loading, failures often occur in the HAZ of weldments. Because composition, metallurgical structure, loading history, and section geometry...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002380
EISBN: 978-1-62708-193-1
... testing, J-R curve evaluation, and crack tip opening displacement (CTOD) method. Other methods used include the combined J standard method, the common fracture toughness test, transition fracture toughness testing, and the weldment fracture testing method. crack initiation fracture toughness...
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
... metastable beta alloys. The article further discusses the weld microstructure for alpha-beta and metastable beta alloys and describes welding defects observed in titanium alloys. The influence of macro- and microstructural characteristics of titanium weldment on mechanical properties is also discussed. The...
Series: ASM Handbook
Volume: 19
Publisher: ASM International
Published: 01 January 1996
DOI: 10.31399/asm.hb.v19.a0002385
EISBN: 978-1-62708-193-1
... variation (standard deviation/mean, expressed as a percentage) for a variety of plates and weldments are summarized in Table 1 . Individual data sets for the MIL-HDBK-5E entries in Table 1 are unique combinations of alloy designation, heat treatment, product form, and orientation, while the other high...
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
..., criteria for “leak-before-break” operation, and the use of operating stress maps to evaluate surface cracks in weldments and castings. Plane strain fracture toughness ( K Ic ) is the inherent minimum toughness limit and thus provides a conservative toughness value for plotting an operating...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003520
EISBN: 978-1-62708-180-1
... and its relationship to the applied and residual stresses. Perform microhardness testing to measure case depths, evaluate cold working, determine quality of weldments, and aid in identifying phases. Perform high-magnification metallographic examination using the electron microscope to study...