Studies on creep behaviour and Statistical analysis of services exposed P-22 grade of Steel

Ray, Ashok K and Roy, Nilima and Sahu, J K and Tiwari, Y N and Ray, R K and Sharma, R K and Gunjan, M K and Singh, S R (2011) Studies on creep behaviour and Statistical analysis of services exposed P-22 grade of Steel. Exploratory (OLP). CSIR-NML, Jamshdpur.

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Abstract

The mechanical properties of a component at different locations in a wrought product even from single heat posses some variation because of the presence of localized heterogeneities like segregation of micro-constituents and localized strains in extensively deformed metals and alloys as a result of thermo-mechanical processing or improper heat treatment. A variety of microstructural evolutions can take place in creep exposed materials such as fine precipitation and subsequent coarsening, recovery of excess dislocations, changes in sub-grain size and thickening of sub-grain boundaries due to dislocation dampening, dynamic recovery and recrystallization of matrix structure. The objective of the work is to study the creep behavior of service exposed P-22 grade steel and investigate the scatter characteristics of creep properties such as rupture time, steady state creep rate from repeat data.

Item Type:Project Reports (Exploratory (OLP))
Official URL/DOI:http://eprints.nmlindia.org/5702
Uncontrolled Keywords:creep behaviour; Statistical analysis
Divisions:Material Science and Technology
ID Code:5702
Deposited By:Dr. A K Sahu
Deposited On:04 Jul 2012 15:31
Last Modified:04 Jul 2012 15:31
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