Structural and strength characteristics of wear-resistant martensitic steels

• Autorzy: Dudziński W. , Konat Ł. , Pękalski G.
• Języki publikacji: EN

Abstrakty

EN

The paper presents structural, strength and impact resistance characteristics of a construction materials group. These are low-alloy steels of martensitic type structure, showing very high strength moduli, high wear resistance in the dynamic load conditions, and good weldability. Subject of the studies has been the most commonly used group of Hardox steels (Hardox 400 and Hardox 500), as well as the Polish equivalents of those materials (HTK 700 and HTK 900). It has been shown that despite similarity of chemical composition and production processes, the steels differ somewhat in structure, which influences their strength and usability (an operating experiment has been performed). Unfavourable structural changes in welded joints deteriorate their operating properties in the heat-affected zones, and cause clear drop in the wear resistance, despite the application of welding procedures recommended by a producer. The work presents synthesis of knowledge on that modern and still not well recognized group of steels, documented with results of own studies.

Słowa kluczowe

EN

wear resistant alloys; martensitic steels; operational characteristics; mechanical properties; structural properties; strength

PL

stopy odporne na ścieranie; odporność na ścieranie; stal martenzytyczna; wytrzymałość

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 2
• Strony: 21--26
• Opis fizyczny: Bibliogr. 10 poz., rys., tab.

Twórcy

autor

Dudziński W.

autor

Konat Ł.

autor

Pękalski G.

• Wrocław University of Technology, Smoluchowskiego 25, 50-370 Wrocław,

Bibliografia

• [1] H. Bugłacki, M. Smajdor, Processing technology influence on utilization properties of Hardox abrasion-resisting steel, Inżynieria Materiałowa No. 6 (2003) 257-259 (in Polish).
• [2] H. Bugłacki, M. Smajdor, Mechanical properties of abrasion - resistant Hardox 400, Advances in Material Science, vol. 4 (2003), No. 2(4) 5-8.
• [3] J. Adamczyk, Engineering metals, vol. 1, WPŚ, Gliwice (2004) (in Polish).
• [4] D. Capanidis, Ł. Konat, G. Pękalski, U. Sachadel, W. Wieleba, Possibilities of application of Hardox steels in the context of their structures and selected properties, Proceedings of the 13th Scientific International Conference PRMR, Zakopane (2005) 59-69 (in Polish).
• [5] W. Dudziński, Ł. Konat, L. Pękalska, G. Pękalski, Structures and properties of Hardox 400 and Hardox 500 steels, Inżynieria Materiałowa No. 3 (2006) 139-142 (in Polish).
• [6] Ł. Konat, G. Pękalski, Structures and selected properties of Hardox steels in the context of their use in surface mining machinery construction, Proceedings of the 15th Scientific International Symposium "Mine Planning & Equipment Selection" MPES'06, Torino (2006) 142-147.
• [7] Ł. Konat, G. Pękalski, Structures, properties and applications of high-strength wear-resisting martensitic steels, Visnik vol. 1, No. 4 (2007), CNU 196-205.
• [8] S. Frydman, Ł. Konat, G. Pękalski, Impact resistance and fractography of low-alloy martensitic steels, Archives of Foundry Engineering (in press).
• [9] S. Frydman, Ł. Konat, G. Pękalski, Structure and hardness change in welded joints of Hardox and HTK steels, Archives of Civil and Mechanical Engineering (in press).
• [10] S. Mendel, J. Pawlus, G. Pękalski, Z. Sysak, J. Szymkowski, Materials for construction elements under intensive impact wear-resisting conditions, Systems, vol. 11, issue 1/2 (2006) 456-463 (in Polish).