The influence of tempering on the microstructure and microhardeness of HS 6-5-2 steel in the area of overlapping remelting obtained with the use of the GTAW method

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

Abstrakty

EN

There have been results of the metallographic research and the measurements of the microhardness of the surface layer of the high speed steel HS 6-5-2 presented from the areas of overlapping remelting. Remelting of the surface layer of the steel was made with the electric arc. After the remelting, there was the conventional tempering done 2x2 hours in the temperature of 560 °C. There is a result from the research that in the area of overlapping of the heat influence zone of the second remelting (HIZ2) on the first remelting zone (R1) there is a decrease of the microhardness. Conducting the conventional tempering causes the increase of microhardness, but it does not change the shape of the microhardness curve. The material included in the paper is the attempt of the answer for the question, in which attempt and why is there a decrease of microhardness of the surface layer of the steel, mentioned above.

Słowa kluczowe

PL

obróbka cieplna; właściwości mechaniczne; badania metalograficzne; stal szybkotnąca; łuk elektryczny

EN

heat treatment; mechanical features; metallographic research; high speed steel; electric arc

• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2010
• Tom: Vol. 10, iss. 1 spec.
• Strony: 335--338
• Opis fizyczny: Bibliogr. 4 poz., rys., wykr.

Twórcy

autor

Dziedzic, A.

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

Bibliografia

• [1] Andrzej Dziedzic, Microstructure and microhardness in the area of heat influence zone of HS 6-5-2 steel remelted by a GTAW method, Archives of Foundry Engineering, Vol. 8, Issue 1, Katowice-Gliwice 2008, s.79-82.
• [2] Andrzej Dziedzic, The microstructure of HS 6-5-2 steel in the areas overlapping remelting obtained by the use of GTAW method, Archives of foundry engineering, Vol. 8, Issue 3, Katowice-Gliwice 2008, s. 47-52.
• [3] Andrzej Bylica, Andrzej Dziedzic, Microhardness changes of surface layer of HS 6-5-2 steel in the areas overlapping remelting obtained with the use of GTAW method, Archives of foundry engineering, Vol. 8, Issue 3, Katowice-Gliwice 2008, s. 25-28.
• [4] L. Dobrzański, E. Hajduczek, L. Nowosielski, Physical metallurgy and heat treatment of tool material, WNT, Warszawa 1990 (in Polish).