Ghosh, Sabita and Yadav, Sandip and Das, Goutam (2008) Study of standard heat treatment on mechanical properties of Inconel 718 using ball indentation technique. Materials Letters, 62 (17-18). pp. 2619-2622.
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The effect of standard heat treatment on the microstructure and mechanical properties of Ni–Fe base super-alloy, Inconel 718 was studied by optical microscopy and ball indentation technique (BIT) using small amount of specimen. In order to get good ductility, good formability, yield, tensile and creep rupture, as-received material was given the standard heat treatment, viz solution treatment at two temperatures 940 °C and 1040 °C for1 h and water quenched (WQ) followed by aging treatment at 720 °C for 8 h. and furnace cooling (FC). The BIT has revealed that the strengths for as-received material are maximum compared to other heat-treated materials. After solution treatment there has been a radical decline in strength. But the ageing causes a significant enhancement of strength. Optical microscopy studies supported the obtained BIT results. γ″-phase is the basic strengthening phase in 718 alloys.
|Uncontrolled Keywords:||Characterization method; Heat treatment; Mechanical properties; Microstructure; Metals and alloys|
|Divisions:||Material Science and Technology|
|Deposited By:||Sahu A K|
|Deposited On:||03 Jun 2010 10:40|
|Last Modified:||14 Dec 2011 17:25|
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