Evolution of Intermetallic Phase Fe2(W, Mo) in 9% Cr Steel during Creep Rupture Tests at 650°C

Aleksey Korneev; D.S. Zmienko; A.S. Gudenko; P.A. Kozlov; A.E. Korneev

doi:10.4028/www.scientific.net/MSF.706-709.865

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HomeMaterials Science ForumMaterials Science Forum Vols. 706-709Evolution of Intermetallic Phase Fe2(W, Mo) in 9%...

Evolution of Intermetallic Phase Fe2(W, Mo) in 9% Cr Steel during Creep Rupture Tests at 650°C

Abstract:

Our report deals with investigation of evolution of AB₂ phase in three melts of new 9% Cr heat resistant steel with different chemical compositions during creep rupture tests at 650°C in the course of 10000 hours. For each sample the following research procedure was applied: (i) identification of all second phases precipitations using differential X-ray analysis method; (ii) study of spatial distribution of second phases using scanning electron microscope and transmission electron microscope; (iii) numerical investigation of mass fraction and average size of AB₂ particles using developed algorithm of statistical processing of images from electron microscope. It was found that for all melts mass fraction-time curve has global maximum and the rate of subsequent reduction of mass fraction depends on content of alloying elements.

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Materials Science Forum (Volumes 706-709)

Pages:

865-870

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.706-709.865

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Online since:

January 2012

Authors:

Aleksey Korneev, D.S. Zmienko, A.S. Gudenko, P.A. Kozlov, A.E. Korneev

Keywords:

9%Cr Steel, Creep Test, Intermetallic Phase

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