Corrosion Tests in Baltic Sea Water on Heat Exchahger Tubes of Various Metallic Materials

Henrikson, S.; Knutsson, L.

doi:10.1179/000705975798320738

Cited by 8 publications

(2 citation statements)

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“…The addition of titanium pinned the grain boundaries that confined the enormous ferrite grain growth in the heat-affected zone due to the formation of chromium from carbides by titanium. This provided the foundation for the discovery of the second generation of duplex [4,5].…”

Section: Introductionmentioning

confidence: 99%

Weldability of duplex stainless steels- A review

et al. 2021

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Duplex stainless steel finds widespread use in various sectors of manufacturing and related fields. It has many advantages due to its distinctive structural combination of austenite and ferrite grains. It is the need of the current generation due to its better corrosive resistance over high production austenitic stainless steels. This paper reviews the weldability of duplex stainless steels, mentions the reason behind the need for duplex stainless steels and describes how it came into existence. The transformations in the heat-affected zones during the welding of duplex stainless steels have also been covered in this paper. The formation, microstructure and changes in high temperature and low temperature heat-affected zones have been reviewed in extensive detail. The effects of cooling rate on austenite formation has been briefly discussed. A comparison of weldability between austenitic and duplex stainless steel is also given. Finally, the paper reviews the applications of the various grades of duplex stainless steel in a variety of industries like chemical, paper and power generation and discusses the future scope of duplex stainless steel in various industrial sectors.

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Section: Introductionmentioning

confidence: 99%

Weldability of duplex stainless steels- A review

et al. 2021

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“…Isso porque a formação de carbonetos de titânio é preferencial frente aos carbonetos de cromo. No entanto, algumas ligas de segunda geração ainda eram susceptíveis à corrosão intergranular sob determinadas condições (HENRIKSON, 1975;KORDATOS, 2001 O efeito benéfico da adição de cobre para redução da taxa de corrosão e para aumento da usinabilidade de AID é restrito para teores de até 2%-massa. Maiores concentrações desse elemento promovem perda de ductilidade a quente além de endurecimento por precipitação.…”

Section: Desenvolvimento E Aplicaçõesunclassified