Published May 2008 | Version v1
Journal article Metadata-only

Microstructural characterization of the HAZ in AISI 444 ferritic stainless steel welds

Creators

  • 1. Federal University of Ceara, Department of Materials and Metallurgical Engineering, Welding Engineering Laboratory, Campus do Pici, Building 715, CEP 60455-760, Fortaleza, Ceara (Brazil)
  • 2. Federal University of Ceara, Department of Materials and Metallurgical Engineering, Materials Characterization Laboratory, Campus do Pici, Building 720, CEP 60455-760, Fortaleza, Ceara (Brazil)
  • 3. Federal University of Santa Catarina, Department of Mechanical Engineering, POLO-Laboratorios de Pesquisa em Refrigeracao e Termofisica, Florianopolis, Santa Catarina (Brazil)

Description

Ferritic stainless steel is used as a coating for equipment in the petroleum refining industry. Welding is the main manufacturing and maintenance process used. However, little information on the metallurgical alterations caused by welding of these steels is found in the literature, prompting this study. In this study the authors evaluated the HAZ microstructure of AISI 444 ferritic stainless steel welded plates, by scanning electron microscopy (SEM) and X-ray diffraction (XRD). The results indicated that a weld thermal cycle caused microphase precipitation in the HAZ of the ferritic stainless steel. Also needle-like Laves phase precipitation occurred in the HAZ, near the partially-melted zone. Other secondary phases such as chi and sigma were observed, as well as nitride, carbide and carbonitride precipitates

Availability note (English)

Available from http://dx.doi.org/10.1016/j.matchar.2007.03.011

Additional details

Identifiers

DOI
10.1016/j.matchar.2007.03.011;
PII
S1044-5803(07)00123-4;

Publishing Information

Journal Title
Materials Characterization
Journal Volume
59
Journal Issue
5
Journal Page Range
p. 528-533
ISSN
1044-5803
CODEN
MACHEX

INIS

Country of Publication
United States
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
39077043
Subject category
S36: MATERIALS SCIENCE;
Descriptors DEI
CARBIDES; CARBONITRIDES; FERRITIC STEELS; HEAT AFFECTED ZONE; LAVES PHASES; MICROSTRUCTURE; NITRIDES; PRECIPITATION; SCANNING ELECTRON MICROSCOPY; STAINLESS STEELS; WELDED JOINTS; WELDING; X-RAY DIFFRACTION
Descriptors DEC
ALLOYS; CARBON ADDITIONS; CARBON COMPOUNDS; COHERENT SCATTERING; DIFFRACTION; ELECTRON MICROSCOPY; FABRICATION; HIGH ALLOY STEELS; IRON ALLOYS; IRON BASE ALLOYS; JOINING; JOINTS; MICROSCOPY; NITROGEN COMPOUNDS; PNICTIDES; SCATTERING; SEPARATION PROCESSES; STEELS; TRANSITION ELEMENT ALLOYS; ZONES

Optional Information

Copyright
Copyright (c) 2007 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.