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  • 1
    Electronic Resource
    Electronic Resource
    Role of Delta-Ferrite in the Dissolution of Passive Films on the Austenitic Stainless-Steel Weld Metals (1999)
    Springer
    Journal of materials science 18 (1999), S. 823-826 
    Details
    ISSN: 1573-4811
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1006657604758
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    Paper (German National Licenses)
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  • 2
    Electronic Resource
    Electronic Resource
    Microstructural evaluation of molybdenum-containing stainless steel weld metals by a potentiostatic etching technique (1998)
    Springer
    Journal of materials science 33 (1998), S. 2691-2700 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Microstructure of austenitic stainless steel weld metals is complicated by the presence of delta-ferrite and microsegregated regions rich in chromium and molybdenum, as well as other minor alloying elements such as sulphur and phosphorus at the δ/γ interphase boundaries. Detailed microstructural studies are required in order to establish correlation between various metallurgical as well as electrochemical corrosion properties with the weld metal microstructure. The conventional chemical etching technique was found to be inadequate in revealing different microconstituents. A powerful potentiostatic etching technique was used to reveal not only ferrite but also different microconstituents that had different specific electrochemical potentials at which they dissolved. This paper describes the weld metal microstructure developed by the addition of molybdenum (4.16–5.83 wt%) to type 316 stainless steel weld metals during Tungsten Inert Gas (TIG) welding with different heat inputs. © 1998 Chapman & Hall
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004334109353
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    Paper (German National Licenses)
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  • 3
    Electronic Resource
    Electronic Resource
    Dissolution behaviour of stainless steel weld metals during active potential range: A calculational approach (2000)
    Springer
    Journal of materials science 35 (2000), S. 735-746 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Uniform or localised corrosion resistance of stainless steels is attributed to the presence of a tenacious passive film formed on the surface, the thickness and chemical composition of which depends on the applied potential. The protective properties of such films depend on the bulk composition of the alloy, presence of secondary phases and elemental segregation. In this paper the role of Cr, Mo and ferrite content on the anodic dissolution behaviour of type 316 austenitic stainless steel weld metals has been investigated. A calculational approach was tried in order to qualitatively understand the behaviour of the stainless steel weld metals with different chemical compositions and heat inputs. Extensive iterative calculations were carried out by using the experimental data on the anodic current values to arrive at the results.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1023/A:1004765519541
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    Paper (German National Licenses)
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  • 4
    Electronic Resource
    Electronic Resource
    A method for quantitative analysis of delta-ferrite, sigma and M23C6 carbide phases in heat treated Type 316 stainless steel weldments (1982)
    Springer
    Journal of materials science 17 (1982), S. 1513-1518 
    Details
    ISSN: 1573-4803
    Source: Springer Online Journal Archives 1860-2000
    Topics: Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
    Notes: Abstract Techniques for quantitative estimation of various secodary phases present in austenitic stainless steels were developed using electrochemical and chemical separation procedures. The secondary phases like delta-ferrite, sigma-phase and M23C6 carbide were obtained in pure forms by the electrochemical technique and their anodic polarization behaviours were studied in a sulphuric acid-ammonium thiocyanate medium. The dissolution behaviour of the secondary phases was studied in bromine-methanol solution and the procedures for the separation of delta ferrite-carbide and sigma-carbide mixtures and the quantitative estimation of delta-ferrite, sigma- and M23C6 carbide-phases were standardized.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00752268
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    Paper (German National Licenses)
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