Properties of double carbides of titanium and group Va metals

G. V. Samsonov; M. A. Voronkin

doi:10.1007/bf01178201

Properties of double carbides of titanium and group Va metals

Soviet Powder Metallurgy and Metal Ceramics ◽

10.1007/bf01178201 ◽

1976 ◽

Vol 15 (4) ◽

pp. 296-299 ◽

Cited By ~ 4

Author(s):

G. V. Samsonov ◽

M. A. Voronkin

Keyword(s):

Double Carbides

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Phases in Austenitic Cast Steel

Defect and Diffusion Forum ◽

10.4028/www.scientific.net/ddf.326-328.215 ◽

2012 ◽

Vol 326-328 ◽

pp. 215-220 ◽

Cited By ~ 5

Author(s):

Małgorzata Garbiak ◽

Bogdan Piekarski

Keyword(s):

Annealing Temperature ◽

Cast Steel ◽

Intermetallic Phases ◽

X Ray Diffraction ◽

Cast State ◽

Electrolytic Extraction ◽

X Ray ◽

Titanium Carbonitrides ◽

C 30 ◽

Double Carbides

The paper presents the characteristics of intermetallic phases occurring in heat-resistant cast austenitic 0.3% C-30% Ni-18% Cr steel with additions of niobium and titanium. Five alloys were examined, in which the content of the examined elements was (wt.%) Nb 0.03, 0.55, 1.57 and 1.92, and Ti 0.03, 0.05, 0.30, 0.83 and 1.00. The phase composition of alloys in as-cast state and after annealing (temperature of 800°C and 900°C, time of up to 300 hrs) was examined by X-ray diffraction technique. Depending on the chemical composition of cast steel, carbides of MC type (NbC, TiC, (Nb,Ti)C), M23C6, titanium carbonitrides TiCN and G phase were identified in its microstructure. The phase morphology was examined on the polished sections and surfaces of metallographic specimens after deep etching by electrolytic extraction method. It was found that M23C6carbides assume the shape of rods, NbC carbides crystallise in the form of lamellae, and titanium carbonitrides TiCN in the form of cubes. An addition of both the stabilising elements favours the formation of double carbides (Nb,Ti)C of octahedral habit.

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