WRC 289:1983

$23.40

Hot Cracking Susceptibility of Austenitic Stainless Steel Weld Metals

Published By	Publication Date	Number of Pages
WRC	1983	86

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Description

The primary purpose of the present research was to investigate the influence of the alloying elements and multiple thermal cycling on the hot cracking resistance of austenitic stainless steel weld metals. In addition, the effect of composition and multiple thermal cycling on the hot ductility was also determined and correlated with the hot cracking tendency. To more clearly define the variables, the following experimental methods were developed and experiments conducted: (1) a method to deveIop laboratory-made alloys with variations in composition, (2) a method to evaluate the hot ductility and the hot cracking behavior of commercial weld metals in addition to experimental compositions, and (3) a test to separate the influence of strain and thermal history on the hot cracking tendency of the alloy. Both the Fissure Bend Test and the Gleeble Hot Cracking Test were utilized to evaluate the hot cracking resistance of austenitic weld metals. Optical metallography, SEM fractography and energy dispersive X-ray analysis were employed to define the cause and mechanism of hot cracking in the austenitic weld metals.

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