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Effect of Additives on Microstructure and Properties of Dual Crystal Cemented Carbides AITranslate

LI Lü-da; GUO Sheng-da; YANG Jian-gao; WANG Shui-long; CHEN Hao; CAO Sai-peng; HUANG Xing; ZHANG Jian-bo
Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology;Faculty of Materials,Metallurgy and Chemistry,Jiangxi University of Science and Technology
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Publisher: Editorial Office of Rare Metals and Cemented Carbides
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Abstract AITranslate

Cemented carbides with different WC grain size distribution and different additives were prepared by powder metallurgy using coarse/fine WC and Co powders as the raw materials.Mo,Cu,VC,Cr3C2 and Y2O3 were selected as the additives.The phase composition,microstructure,density and mechanical properties of the prepared alloys were measured by XRD,SEM,drainage method and Vickers hardness tester.The results show that the phase composition of all the prepared alloys is almost the same,all having obvious WC peak.The number of abnormally grown WC grains in the alloy decreases with the decrease of the mass ratio of coarse-grained WC to fine-grained WC powder.Meanwhile,alloy hardness continuously increases but the fracture toughness decreases.The additives can effectively inhibit the growth of WC grains and improve alloy hardness,but the relative density of the alloys decreases with the increase of additive content.The dual crystal cemented carbide with 1% Cr3C2 has the best comprehensive properties.

KeyWords AITranslate

dual crystal cemented carbide ratio of coarse WC to fine WC additive mechanical property

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Basic Information:

DOI：

Chinese Library Classification Number:TG135.5[一般工业技术—材料科学与工程]

Citation Information:

Cemented carbides with different WC grain size distribution and different additives were prepared by powder metallurgy using coarse/fine WC and Co powders as the raw materials.Mo,Cu,VC,Cr3C2 and Y2O3 were selected as the additives.The phase composition,microstructure,density and mechanical properties of the prepared alloys were measured by XRD,SEM,drainage method and Vickers hardness tester.The results show that the phase composition of all the prepared alloys is almost the same,all having obvious WC peak.The number of abnormally grown WC grains in the alloy decreases with the decrease of the mass ratio of coarse-grained WC to fine-grained WC powder.Meanwhile,alloy hardness continuously increases but the fracture toughness decreases.The additives can effectively inhibit the growth of WC grains and improve alloy hardness,but the relative density of the alloys decreases with the increase of additive content.The dual crystal cemented carbide with 1% Cr3C2 has the best comprehensive properties.

quote

GB/T 7714-2015 [1] LI Lü-da, GUO Sheng-da, YANG Jian-gao, et al. Effect of Additives on Microstructure and Properties of Dual Crystal Cemented Carbides[J]. Rare Metals and Cemented Carbides, 2020(5): 72-77.
MLA [1] LI Lü-da, et al., "Effect of Additives on Microstructure and Properties of Dual Crystal Cemented Carbides." Rare Metals and Cemented Carbides, no. 5, 2020, pp. 72-77.
APA [1] LI Lü-da, GUO Sheng-da, YANG Jian-gao, WANG Shui-long, CHEN Hao, CAO Sai-peng, HUANG Xing, & ZHANG Jian-bo. (2020). Effect of Additives on Microstructure and Properties of Dual Crystal Cemented Carbides. Rare Metals and Cemented Carbides(5), 72-77.
IEEE [1] LI Lü-da, GUO Sheng-da, YANG Jian-gao, WANG Shui-long, CHEN Hao, CAO Sai-peng, HUANG Xing, and ZHANG Jian-bo, "Effect of Additives on Microstructure and Properties of Dual Crystal Cemented Carbides," Rare Metals and Cemented Carbides, no. 5, pp. 72-77, 2020. keywords: {dual crystal cemented carbide;ratio of coarse WC to fine WC;additive;mechanical property}