Structure and properties of forming austenitic X5CrNi18-9 stainless steel in a cold working

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

Abstrakty

EN

Purpose: The aim of the paper is to analyze the influence of the degree of rolling reduction on the structure forming and changes of mechanical properties in cold-rolled sheet-metals of austenitic X5CrNi18-9 stainless steel. Design/methodology/approach: The examinations contained metallographic observations of the structure on a light microscope and on the scanning electron microscope (SEM), researches of mechanical properties in a static tensile test and microhardness measurements made by Vickers’s method. The analysis of the phase composition was carried out on the basis of X-ray researches. In the qualitative X-ray analysis the comparative method was applied. Fractographic tests of the fracture after the decohesion of samples in a static tensile test at room temperature were executed in a SEM. Findings: It has been found that plastic deformation in a cold working of austenitic stainless steel type X5CrNi18-9 induced in its structure martensitic transformation . › .’. The occurrence of martensite phases .’ 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 from 10% to 70%. Moreover, the results of the X-ray quantitative analysis allowed to determine the proportional part of martensite phases .` in the structure of investigated steel in the examined range of cold plastic deformation. Practical implications: The analysis of the obtained results permits to state that the amount of martensite phases .` in the investigated steel structure increases with the degree of deformation in the cold rolling. Besides, a good correlation was found between changes of the structure and the effects of investigations of the mechanical properties. Originality/value: Good correlation between changes of the structure and the effects of investigations of the mechanical properties in the austenitic X5CrNi18-9 stainless steel was found.

Słowa kluczowe

EN

metallic alloy; austenitic stainless chromium-nickel steel; structure; mechanical properties; austenite phase; martensite phase; cold rolling

PL

stop metalowy; stal austenityczna nierdzewna chromowo-niklowa; struktura; właściwości mechaniczne; faza austenityczna; faza martenzytowa; walcowanie na zimno

• Wydawca: International OCSCO World Press
• Czasopismo: Journal of Achievements in Materials and Manufacturing Engineering
• Rocznik: 2009
• Tom: Vol. 33, nr 1
• Strony: 19--26
• Opis fizyczny: Bibliogr. 30 poz., rys., tabl.

Twórcy

autor

Ozgowicz W.

autor

Kurc A.

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

Bibliografia

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