Effect of Niobium and Vanadium Additions on the As-Cast Microstructure and Properties of Hypoeutectic Fe-Cr-C Alloy

被引：38

作者：

Filipovic, Mirjana ^{[1
]}

Kamberovic, Zeljko ^{[1
]}

Korac, Marija ^{[1
]}

Jordovic, Branka ^{[2
]}

机构：

[1] Univ Belgrade, Fac Technol & Met, Dept Met Engn, Belgrade 11120, Serbia

[2] Univ Kragujevac, Fac Tech Sci, Dept Phys & Mat, Cacak 32000, Serbia

来源：

ISIJ INTERNATIONAL | 2013年 / 53卷 / 12期

关键词：

Fe-Cr-C alloys; carbides; matrix microstructure; hardness; fracture toughness; wear resistance; CHROMIUM WHITE IRON; ABRASION RESISTANCE; FRACTURE-TOUGHNESS; CRYOGENIC TREATMENT; TITANIUM; SOLIDIFICATION; MORPHOLOGY; CARBIDE; STEELS;

D O I：

10.2355/isijinternational.53.2160

中图分类号：

TF [冶金工业];

学科分类号：

0806 ;

摘要：

The effect of niobium and vanadium additions (0.5 mass% and 2 mass%) on the as-cast microstructure and properties of hypoeutectic white cast iron containing 19 mass% Cr and 2.9 mass% C, has been examined. NbC carbides present in the structure of tested Fe-Cr-CNb alloys, due to their characteristic morphology, show higher wear resistance and toughness than M7C3 carbides. Increasing amount of this type of carbides, caused by the increase of niobium in the alloy, contributes to the improvement of wear resistance and dynamic fracture toughness. The alloy containing 2% Nb gives the best compromise between wear resistance and fracture toughness. This alloy shows about 23% greater dynamic fracture toughness and about 25% greater abrasion wear resistance than the basic Fe-Cr-C alloy. Besides, the secondary carbides which precipitate in the matrix regions of the tested Fe-Cr-C-V white irons also influence the abrasion behaviour and fracture toughness. The alloy containing 0.5% V has approximately the same fracture toughness but lower wear resistance than alloy with 2% Nb.

引用

页码：2160 / 2166

页数：7

共 27 条

[1]

[Anonymous], 1989, AFS T

[2]

BAIK HK, 1988, AFS T, V96, P405

[3] The effect of titanium on the wear behaviour of a 16%Cr white cast iron under pure sliding [J].

Bedolla-Jacuinde, A. ;

Coffea, R. ;

Mejia, I. ;

Quezada, J. G. ;

Rainforth, W. M. .

WEAR, 2007, 263 :808-820

[4] Effect of titanium on the as-cast microstructure of a 16%chromium white iron [J].

Bedolla-Jacuinde, A ;

Correa, R ;

Quezada, JG ;

Maldonado, C .

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2005, 398 (1-2) :297-308

[5] Thermodynamic calculations for Nb-containing high-speed steels and white-cast-iron alloys [J].

Coelho, GC ;

Golczewski, JA ;

Fischmeister, HF .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 2003, 34A (09) :1749-1758

[6] Effect of (Fe,Cr)7C3 carbide orientation on abrasion wear resistance and fracture toughness [J].

Coronado, J. J. .

WEAR, 2011, 270 (3-4) :287-293

[7] Solidification structure and abrasion resistance of high chromium white irons [J].

Dogan, ON ;

Hawk, JA ;

Laird, G .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1997, 28 (06) :1315-1328

[8] Strain hardening of austenite in Fe-Cr-C-V alloys under repeated impact [J].

Filipovi, Mirjana ;

Romhanji, Endre .

WEAR, 2011, 270 (11-12) :800-805

[9] Chemical Composition and Morphology of M7C3 Eutectic Carbide in High Chromium White Cast Iron Alloyed with Vanadium [J].

Filipovic, Mirjana ;

Romhanji, Endre ;

Kamberovic, Zeljko .

ISIJ INTERNATIONAL, 2012, 52 (12) :2200-2204

[10] Solidification of High Chromium White Cast Iron Alloyed with Vanadium [J].

Filipovic, Mirjana ;

Kamberovic, Zeljko ;

Korac, Marija .

MATERIALS TRANSACTIONS, 2011, 52 (03) :386-390

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