Effect of Hardness on the Surface Integrity of AISI 4340 Steel

Autor:	Yoichiro Matsumoto, C. R. Liu, M. M. Barash
Rok vydání:	1986
Předmět:	Austenite Stress (mechanics) Hardened steel Materials science Microscope Optical microscope Residual stress law Martensite Metallurgy Surface integrity law.invention
Zdroj:	Journal of Engineering for Industry. 108:169-175
ISSN:	0022-0817
DOI:	10.1115/1.3187060
Popis:	The effect of hardness on the residual stress in the machined surface of AISI 4340 steel was studied. Chips produced during the machining also were examined and the surface structure was investigated using optical microscope and scanning transmission microscope. Reflection electron diffraction study revealed the existence of austenite in the white layer of the machined surface together with untempered martensite. The residual stress near the machined surface or hardened steel is a compressive stress, and it changes to tensile stress as the hardness decreases. Chip segmentation was observed when steel with hardness of over Rc 50 was machined.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::3bf18ce9ad02068307676b96f30a0af7 https://doi.org/10.1115/1.3187060 Zobrazit plný text záznamu