Effect of chromium and molybdenum concentrations on the properties of steel 42KhMFA

Autor:	V. V. Krasikov, V. V. Skotnikov, N. G. Skorov, V. N. Zikeev
Rok vydání:	1980
Předmět:	Chromium Materials science chemistry Mechanics of Materials Molybdenum Metallurgy Metallic materials Metals and Alloys chemistry.chemical_element Condensed Matter Physics Brittle fracture Nitriding Hardenability
Zdroj:	Metal Science and Heat Treatment. 22:414-417
ISSN:	1573-8973 0026-0673
Popis:	1. Steels 42KhMFA and 40KhMFA have practically the same static and fatigue strengths (σb, σ−1) as well as resistance to ductile and brittle fracture, differing only in hardenability, depth of the nitrided case, and character of the change in hardness. 2. For crankshafts of the YaMZ-238 engine the molybdenum content of steel 42KhMFA can be reduced to 0.2–0.3%. In this case, however, the chromium content should be raised to 1.2–1.5%, which makes it possible to obtain the necessary hardness of the nitrided case (≥HV 600 at the surface and ≥HV 500 at a depth of 0.2 mm) with gas nitriding for 18–20 h. This change in the composition of the steel will reduce the consumption of scarce molybdenum.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::101c84f64ab7f10c3b09a0a9f6bd88cc https://doi.org/10.1007/bf00693645 Zobrazit plný text záznamu Full text from SpringerLink