Effect of Spark Cutting on the Local Change in the Phase Composition and the Fatigue Strength of Austenitic–Martensitic Sheet TRIP Steel

Autor:	D. V. Prosvirnin, S. V. Pivovarchik, V. F. Terent’ev, A. A. Ashmarin, M. E. Prutskov, A. G. Kolmakov
Rok vydání:	2021
Předmět:	Austenite Materials science Martensite Phase (matter) Metals and Alloys TRIP steel Surface layer Composite material Edge (geometry) Fatigue limit Order of magnitude
Zdroj:	Russian Metallurgy (Metally). 2021:1333-1336
ISSN:	1555-6255 0036-0295
Popis:	The phase transformations that occur at the edges of samples made of austenitic–martensitic sheet VNS9-Sh TRIP steel during spark cutting are studied. Mainly an austenitic structure with a low martensite content (5%) is found to form at the edges of the cut. The removal of the surface layer, which has defects and a heterogeneous structure, from the cutting edge by mechanical processing increases the fatigue life of the material by more than an order of magnitude and the fatigue limit by 150 MPa (up to 900 MPa).
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::2b2b181d90c40490c706bf33458b6090 https://doi.org/10.1134/s0036029521100335 Zobrazit plný text záznamu Full text from SpringerLink