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dc.contributor.authorBanavasi, Shashidhar, M.
dc.contributor.authorRavishankar, K.S.
dc.contributor.authorNaik, Padmayya, S.
dc.date.accessioned2020-03-30T10:18:22Z-
dc.date.available2020-03-30T10:18:22Z-
dc.date.issued2018
dc.identifier.citationIOP Conference Series: Materials Science and Engineering, 2018, Vol.330, 1, pp.-en_US
dc.identifier.urihttp://idr.nitk.ac.in/jspui/handle/123456789/8300-
dc.description.abstractThe impacts of high Mn content on microstructure and fatigue characteristics of ADI at 300, 350 and 400 �C for 120 min have been examined. Optical microscopy images reveals bainite morphology only at 300�C. Higher Mn contents hinders bainite transformation in the locales of Mn and Mo segregation, where in stage II reaction initiates near the graphite nodules before stage I reaction ends away from the nodules which creates more unreacted austenite volume after cooling forming martensite around the periphery creating austenite-martensite zone at 350 �C and tremendously articulated at 400�C. Feathery ferrite laths, stable retained austenite and uniform density hardness in the matrix, promotes higher toughness and fatigue properties (250 MPa @ 106 cycles) at 300 �C. Presence of stage II carbides in the eutectic cell and austenite-martensite zone in the intercellular regions, due to their embrittlement in the matrix, makes easy crack path for initiation and propagation deteriorating properties at 350�C and above. SEM images of fatigue fractured surface revealed that at 300�C, showed a regular crack interconnecting graphite nodule, fatigue striation and quazi-cleavage fracture mode, and at 350 & 400�C reveals the carbide, austenite-martensite and porosity/defect final fracture region. � Published under licence by IOP Publishing Ltd.en_US
dc.titleInfluence of High Mn-Cu-Mo on Microstructure and Fatigue characteristics of Austempered Ductile Ironen_US
dc.typeBook chapteren_US
Appears in Collections:2. Conference Papers

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