The comparison of the structure and microhardness of the tool steel C90 and HS 6-5-2 remelted with the electric arc

• Autorzy: Dziedzic A. , Adamiak S.
• Języki publikacji: EN

Abstrakty

EN

The examination of the structure and microhardness of surface layer of C90 non-alloy steel and HS 6-5-2 high speed steel after electric arc treatment are presented in the paper. The comparison has been presented due to the similar content of the carbon in both steels. The structure of the remelted zone of the steel C90 before the conventional tempering consists of the cells, dendritic cells surrounded with the cementite, there is a plate martensite and retained austenite inside them, whereas the structure of the steel HS 6-5-2 is consistuted with cells, dendritic cells and dendrites surrounded with the eutectic system, inside of which there is a plate martensite and retained austenite. Such structure is characterized by the similar microhardness (790-800 HV0,065) and intensity of the tribiological wear. The tempering causes the decrease of the microhardness in non-alloy steel and the increase of the microhardness in high speed steel.

Słowa kluczowe

EN

heat treatment; metallography; microhardness; tool steel; remelting of the surface layer; electric arc; conventional tempering

PL

obróbka cieplna; mikrotwardość; stal narzędziowa; topienie łukiem elektrycznym; hartowanie konwencjonalne

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 2
• Strony: 39--42
• Opis fizyczny: Bibliogr. 7 poz., il., wykr.

Twórcy

autor

Dziedzic A.

• Institute of Technics, Rzeszow University, Rejtana 16 B, 35-310 Rzeszow, Poland

autor

Adamiak S.

• Institute of Technics, Rzeszow University, Rejtana 16 B, 35-310 Rzeszow, Poland

Bibliografia

• [1] L. Dobrzański, E. Hajduczek, L. Nowosielski: Physical metallurgy and heat treatment of tools materials, WNT, Warsaw, 1990 (in Polish).
• [2] A.W. Orłowicz, A. Trytek: Effect of rapid solidification on sliding wear of iron castings, Wear 9258, 2002.
• [3] Z. Nitkiewicz, J. Iwaszko: The use of arc plasma in surface engineering. Material engineering, 6, 373-375, 2000, (in Polish).
• [4] A. W. Orłowicz, M. Mróz: Thermal coefficients of the GTAW method. Archives of Foundry, Year 2003, no 3, 2003, (in Polish).
• [5] Y. Adonyj, R.W. Richardson, W.A. Beaslack: Investigation of arc force effects in surface GTAW welding. Welding Jour-nal, 9, 35-44, 1996.
• [6] E. Fraś: Crystallization of metals, WNT Warszawa 2003.
• [7] S. Adamiak, A. Dziedzic: Comparing the tribiological resis-tance of the tool steel C90 and HS 6-5-2 remelted with the electric arc, Paper received to the publication in Archives of Foundry, R. 2010.