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dissimilar-metal welding

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Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001311
EISBN: 978-1-62708-215-0
... metal, at intermediate levels above the area of uniform corrosion, shows that the weld was dendritic, indicating either improper control of the flash-welding process or the use of filler metal. Pronounced localized dissimilar-metal corrosion occurred to a depth of about 0.38 mm (0.015 in.) in the base...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001749
EISBN: 978-1-62708-215-0
... used to seal the threaded joint. It was recommended that only brass fittings be used to assemble removable joints and that use of washers, sealants, and hydrocarbon lubricants be strictly avoided. Dissimilar metals Oxyacetylene welding Welding machines Carbon steel (Other, miscellaneous...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001352
EISBN: 978-1-62708-215-0
... processing equipment Cracks(fracturing) Dissimilar metals, welding Weld defects Welded joints Welding parameters AFNOR Z30C13 Joining-related failures Background Visual Examination of General Physical Features Testing Procedure and Results Discussion Conclusion and Recommendations...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c0091362
EISBN: 978-1-62708-220-4
... steels. Welds must also be tough and ductile. Lastly, dissimilar weld filler metals can be successfully used. To avoid premature failure, the dissimilar combination should be corrosion tested to ensure suitability for the intended service. ...
Book Chapter

Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003548
EISBN: 978-1-62708-180-1
.... Dissimilar-metal crevices, such as at threaded connections, are to be avoided, if possible. Crevices should be sealed, preferably by welding or brazing, although putties are sometimes used effectively. Replaceable sections of the more active member should be used at joints, or the corrosion allowance...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006783
EISBN: 978-1-62708-295-2
... of corrosion. Uniform attack, pitting, and crevice corrosion can all be exacerbated by galvanic conditions. Galvanic corrosion occurs when two dissimilar conducting materials (metallic or nonmetallic) are in electrical contact with an electrolyte or conducting medium. It usually consists of two dissimilar...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c0048808
EISBN: 978-1-62708-228-0
... heaviest, between the martensite band and the duplex structure, the structure was probably austenitic. These phase changes are predicted from the Schaeffler diagram (in the article “Hardfacing, Weld Cladding, and Dissimilar Metal Joining” in Welding, Brazing, and Soldering , Volume 6 of the ASM...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.design.c0089730
EISBN: 978-1-62708-233-4
..., the intersection of the two welds contained cracks similar in appearance to those normally formed when variations in thermal expansion and contraction are encountered when welding dissimilar metals. A microhardness traverse across the weld area revealed a base metal average hardness of 89 HRB. The hardness...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001054
EISBN: 978-1-62708-214-3
... to premature failure by stress-corrosion cracking under sustained loading if the atmosphere was saturated with water vapor. Dissimilar metals, bonding Pressure welding Stainless steels, bonding Welded joints, corrosion Silver Stress-corrosion cracking Background Testing Procedure and Results...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001816
EISBN: 978-1-62708-180-1
... in tube metal temperatures. In a superheater or a reheater, such temperature increases can lead to premature creep failures, dissimilar-metal weld failures, and accelerated ash corrosion or oxidation. In furnace walls, deposits may also lead to hydrogen damage (additional information is provided...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006756
EISBN: 978-1-62708-295-2
... Falling-slag damage Tube rubbing Rupture Short-term overheating (stress rupture) Long-term overheating (creep rupture) Graphitization Cracking Corrosion fatigue—waterside Corrosion fatigue—fireside Thermomechanical fatigue Vibration fatigue Dissimilar-metal...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003521
EISBN: 978-1-62708-180-1
... Dissimilar metal weld stress rupture Stress-corrosion cracking Quality control Maintenance cleaning damage Material imperfections/welding imperfections/discontinuities Source: Ref 3 Comparison between three similar boiler waterwall damage mechanisms Table 3 Comparison between...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001793
EISBN: 978-1-62708-241-9
.../j.ijfatigue.2005.06.051 7. Wulpi D.J. , Understanding How Components Fail ( American Society for Metals , Metals Park , 1985 ) 8. Chaveriat P.F. , Kim G.S. , Shah S. , Indacochea J.E. , Low carbon steel weld metal microstructures: the role of oxygen and manganese...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001570
EISBN: 978-1-62708-220-4
... to form hydrides if the temperature is sufficiently high. The formation of titanium hydrides becomes significant as the hydrogen content increases above approximately 20 ppm 7 . The hydriding of titanium occurs at higher rates with increasingly higher titanium-dissimilar metal area ratio in the galvanic...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001420
EISBN: 978-1-62708-220-4
... between the lining and the basket had played more than a minor part in their development. They arose largely as a result of electrochemical action due to the contact of two dissimilar metals. The solution potential of Monel metal is of the order of −0.17 volts, while that of the steel would probably...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006758
EISBN: 978-1-62708-295-2
.... There are also several subsets of the standard NDE methods that are available when either the part has a large or complex geometry such as a welded assembly, or is additively manufactured, or if the part has both metallic and nonmetallic or composite sections. There are terahertz (THz) imaging, infrared (IR...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006757
EISBN: 978-1-62708-295-2
... candy” fracture in a tensile specimen taken from a cast steel that had aluminum nitrides segregated to the grain boundaries Fig. 14 Local area of fatigue striations on an extruded 2024 aluminum alloy component Fig. 16 Galvanic attack at a water pipe joint involving dissimilar metals...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003522
EISBN: 978-1-62708-180-1
... corrosion), which is typically apparent from overall thinning and loss of metal Galvanic corrosion, which occurs when dissimilar metals are in electrical contact via an electrolyte (or less commonly, when similar metals are in electrical contact via either dissimilar electrolytes or even a similar...
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
... at the weld toe Cracks—hot or cold, longitudinal or transverse, crater and at weld toe Gas porosity Arc strike Spatter Backing piece left on: failure to remove material placed at the root of a weld joint to support molten weld metal Subsurface features that are causes for rejection...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006778
EISBN: 978-1-62708-295-2
... within the base metal at the repair weld fusion lines and within the weld metal. Figure 6(a) shows the opened crack features in an area where a weld and remaining casting imperfection were apparent. The macroscopic fracture features differed substantially between the base metal and the welds. Some...