Effect of deformation-induced martensite on the microstructure, mechanical properties and corrosion resistance of X5CrNi18-8 stainless steel

• Autorzy: Ozgowicz W. , Kurc A. , Kciuk M.
• Języki publikacji: EN

Abstrakty

EN

Purpose: The aim of the paper was to determine the effect of deformation-induced martensite on the microstructure, mechanical properties and corrosion resistance of X5CrNi18-8 austenitic steel. Design/methodology/approach: The investigations included observations of the microstructure on a light microscope, researches of mechanical properties in a static tensile test, microhardness measurements made by Vickers's method and corrosion resistance test examined using weight method. The analysis of the phase composition was carried out on the basis of X-ray researches. The amount of martensite α' in the obtained microstructures was investigated with ferritescope magnetic tester. The observations of the surface morphology after corrosive tests were carried out using Scanning Electron Microscope. The scope of this study was to achieve the correlations between the mechanical, corrosion and structural properties of cold rolled stainless steel. Findings: Plastic deformation in a cold working of austenitic stainless steel induced in its structure martensitic transformation γ → α'. The occurrence of martensite α' in the investigated steel structure has an essential meaning in manufacturing process of forming sheet-metals from austenitic steel. Research limitations/implications: The X-ray phase analysis in particular permitted to disclose and identify the main phases on the structure of the investigated steel after its deformation within the range 10 - 70%. The results of the ferritescope measurements allowed determining the proportional part of α' phases in the structure of investigated steel in the examined range of cold plastic deformation. The microscope observations of the surface samples subjected to corrosion resistance test in 30 wt% H2SO4 solutions permitted to evaluate kinds and the rate of corrosion damages. Originality/value: A wide range of practical applications of 18/8 steel sheets is warranted by both their high corrosion resistance and high plastic properties.

Słowa kluczowe

EN

austenitic stainless steel; plastic deformation; mechanical properties; weight loss method; H2SO4 solution

PL

stal austenityczna; stal nierdzewna; odkształcenie plastyczne; właściwości mechaniczne; ubytek masy; roztwór H2SO4

• Wydawca: International OCSCO World Press
• Czasopismo: Archives of Materials Science and Engineering
• Rocznik: 2010
• Tom: Vol. 43, nr 1
• Strony: 42--53
• Opis fizyczny: Bibliogr. 32 poz.

Twórcy

autor

Ozgowicz W.

autor

Kurc A.

autor

Kciuk M.

• Division of Constructional and Special Materials Engineering, Institute of Engineering Materials and Biomaterials, Silesian University of Technology, ul. Konarskiego 18a, 44-100 Gliwice, Poland,

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