Zinc contamination cracking in stainless steel after welding

Pańcikiewicz, Krzysztof; Tuz, Lechosław; Zielińska‐Lipiec, A.

doi:10.1016/j.engfailanal.2014.02.013

Cited by 16 publications

(7 citation statements)

References 9 publications

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“…AISI 304 (X5CrNi18-10) steel is a very popular grade of austenitic stainless steel, with good corrosion resistance. It is used in the construction, automotive, food, and chemical industries, for decorative purposes and kitchen equipment, as well as an element of electronic equipment [ 6 ]. There have been many studies describing the corrosion resistance, mechanical and functional properties of this steel [ 7 , 8 ].…”

Section: Introductionmentioning

confidence: 99%

Laser Dissimilar Welding of AISI 430F and AISI 304 Stainless Steels

et al. 2020

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A dissimilar autogenous laser welded joint of AISI 430F (X12CrMoS17) martensitic stainless steel and AISI 304 (X5CrNi18-10) austenitic stainless steel was manufactured. The welded joint was examined by non-destructive visual testing and destructive testing by macro- and microscopic examination and hardness measurements. With reference to the ISO 13919-1 standard the welded joint was characterized by C level, due to the gas pores detected. Microscopic observations of AISI 430F steel revealed a mixture of ferrite and carbides with many type II sulfide inclusions. Detailed analysis showed that they were Cr-rich manganese sulfides. AISI 304 steel was characterized by the expected austenitic microstructure with banded δ-ferrite. Martensitic microstructure with fine, globular sulfide inclusions was observed in the weld metal. The hardness in the heat-affected zone was increased in the martensitic steel in relation to the base metal and decreased in the austenitic steel. The hardness range in the weld metal, caused by chemical inhomogeneity, was 184–416 HV0.3.

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Section: Introductionmentioning

confidence: 99%

Laser Dissimilar Welding of AISI 430F and AISI 304 Stainless Steels

et al. 2020

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“…Thus, at the surface of the steel, a liquid layer of Cu or copper oxide could be present, in the region adjacent the weld, which is heated to a temperature of about 1100°C. The presence of a thin liquid layer and tensile stress during the test Transvarestraint causes intergranular fracture called Liquid Metal Embrittlement (LME) [13][14][15][16]. The cracks spread to a depth of 20-30 microns.…”

Section: Discussionmentioning

confidence: 99%

Study of the Weldability of Austenitic PH Steel for Power Plants

Ziewiec¹

2016

Archives of Metallurgy and Materials

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The article presents the results of Transvarestraint test of a modern precipitation hardened steel X10CrNiCuNb18-9-3 with copper. For comparison, the results of tests of conventional steel without the addition of copper X5CrNi18-10 are presented. The total length of all cracks and the maximum length of cracks were measured. The study of microstructure (LM, SEM) showed that the austenitic stainless steel X10CrNiCuNb18-9-3 is very prone to hot cracking. After performing the Transvarestraint tests three types of cracks were observed: solidification cracks occurring during crystallization, liquation cracks due to segregation in the heat affected zone (HAZ) and surface cracks. Niobium carbonitrides dispersed in the bands of segregation are the reason of high susceptibility to liquation cracking. Segregation of copper occurring during solidification causes of surface cracking. A combined effect of copper and stresses contributes to formation of hot microcracks. These microcracks propagate to a depth of 20-30 μm.

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“…As a result of a heat input accompanying the welding process the coating melted. In turn, the stiffening of the structure resulted in the exceeding of a critical stress triggering the penetration of liquid zinc along grain boundaries [18]. Figure 2b presents cracks in an arc braze welded joint made using a copper-based wire.…”

Section: Liquid Metal Embrittlementmentioning

confidence: 99%

“…Cracks triggered by liquid metal embrittlement: a) zinc from the zinc coating on the sheet surface[18], b) copper from the weld deposit[19], c) copper from the material being welded[20] …”

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confidence: 99%