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21Cr-6Ni-9Mn

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Published: 01 June 2019
Fig. 1 HAZ of a weld in 21Cr-6Ni-9Mn stainless steel part showing evidence of cracking caused by liquid-copper penetration. (a) SEM micrograph of section cut parallel to weld and perpendicular to crack showing the intergranular nature of the crack. 165×. (b) Cu Kα x-ray fluorescence scanning More
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.process.c0047602
EISBN: 978-1-62708-235-8
... Abstract Parts of 21Cr-6Ni-9Mn stainless steel that had been forged at about 815 deg C (1500 deg F) were gas tungsten arc welded. During postweld inspection, cracks were found in the HAZs of the welds. Welding had been done using a copper fixture that contacted the steel in the area of the HAZ...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006786
EISBN: 978-1-62708-295-2
...-induced embrittlement cracks were found during postweld examination of 21Cr-6Ni-9Mn stainless steel. The fixture used during welding was fabricated from copper. Shallow cracks (1.3 mm, or 0.05 in., deep) running perpendicular to the weld were found in the weld and HAZ during metallurgical analysis...