Impact resistance and fractography of low-alloy martensitic steels

• Autorzy: Frydman S. , Konat Ł. , Łętkowska B. , Pękalski G.
• Języki publikacji: EN

Abstrakty

EN

In this paper dynamic properties of HTK 700H, HTK 900H, Hardox 400 and Hardox 500 steels in delivered State (after hardening and tempering) are considered. Charpy V - notch (CVN) test results in connection with fractography in the ductile - to - brittle transition temperature region were analyzed. The impact transition curve obtained from CVN test not always predicts properly a behavior of materials in conditions of dynamic loading, so the analyze of character of fracture helps to evaluate the real behavior of materials. Tested samples were cut out longitudinally and transversely in relation to cold work direction. The results of CVN test for investigated steels, in the range of temperatures from -40 to 20 °C are presented. Regarding ductile - to - brittle transition temperature, there is a significant difference taking into account values of Charpy V energy absorbed and a character of fracture.

Słowa kluczowe

EN

wear resistant alloy; martensitic steel; structural properties; fractography analysis

PL

stop odporny na ścieranie; stal martenzytyczna; właściwości strukturalne; analiza fraktograficzna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2008
• Tom: Vol. 8, iss. 1 spec.
• Strony: 89--94
• Opis fizyczny: Bibliogr. 5 poz., rys., tab., wykr.

Twórcy

autor

Frydman S.

• Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Konat Ł.

• Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Łętkowska B.

• Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

autor

Pękalski G.

• Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

Bibliografia

• [1] Ł. Konat, G. Pękalski, Structures, properties and applications of high-strength wear-resisting martensitic steels, Visnik vol. 1, No. 4 (2007), CNU 196-205.
• [2] W. Dudziński, Ł. Konat, G. Pękalski, Structural and strength characteristics of wear-resistant martensitic steels, Proceedings of the 9th International Scientific Conference „Quality Assurance in Foundry”, Krasiczyn’2008 (in press).
• [3] S. Frydman, L. Konat, G. Pękalski, Properties of Hardox 400 and Hardox 500 steels in dynamic loading condition, Proceedings of the 24lh Danubia-Adria Symposium on Developments in Experimental Mechanics, Sibiu, Romania (2007)219-220.
• [4] S. Frydman, Ł. Konat, G. Pękalski, Fractographic analysis of Hardox 400 and Hardox 500 steels in impact tcsting, Górnictwo Okrywkowe No. 3-4 (2007) 36-47 (in Polish).
• [5] S. Frydman, Ł. Konat, G. Pękalski, Impact and fractographic characteristics of Hardox 400 and Hardox 500 in normalized state, Górnictwo Okrywkowe No. 3-4 (2007) 48-56 (in Polish).