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Microstructural studies on Alloy 693

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Title Microstructural studies on Alloy 693
 
Creator HALDER, R
DUTTA, RS
SENGUPTA, P
SAMAJDAR, I
DEY, GK
 
Subject BARIUM BOROSILICATE GLASS
NUCLEAR-WASTE
CORROSION BEHAVIOR
RADIOACTIVE-WASTE
GRAIN-BOUNDARY
PROCESS POT
MELT
IMMOBILIZATION
SULFATE
INCONEL-690
 
Description Superalloy 693, is a newly identified 'high-temperature corrosion resistant alloy'. Present study focuses on microstructure and mechanical properties of the alloy prepared by double 'vacuum melting' route. In general, the alloy contains ordered Ni3Al precipitates distributed within austenitic matrix. M6C primary carbide, M23C6 type secondary carbide and NbC particles are also found to be present. Heat treatment of the alloy at 1373 K for 30 min followed by water quenching (WQ) brings about a microstructure that is free from secondary carbides and Ni3Al type precipitates but contains primary carbides. Tensile property of Alloy 693 materials was measured with as received and solution annealed (1323 K, 60 min, WQ) and (1373 K, 30 min, WQ) conditions. Yield strength, ultimate tensile strength (UTS) and hardness of the alloy are found to drop with annealing. It is noted that in annealed condition, considerable cold working of the alloy can be performed. (C) 2014 Elsevier B.V. All rights reserved.
 
Publisher ELSEVIER SCIENCE BV
 
Date 2014-12-28T17:10:33Z
2014-12-28T17:10:33Z
2014
 
Type Article
 
Identifier JOURNAL OF NUCLEAR MATERIALS, 453(1/3)91-97
0022-3115
1873-4820
http://dx.doi.org/10.1016/j.jnucmat.2014.07.005
http://dspace.library.iitb.ac.in/jspui/handle/100/16968
 
Language English