Effects of TiC Content on the Mechanical Properties and Microstructure of Ultrafine Grained WC-8Co Cemented Carbides AITranslate
Abstract AITranslate
WC-8 Co cemented carbide with different TiC contents was prepared by spark plasma sintering technology.The effects of TiC content on the relative density,mechanical properties and microstructure of WC-8 Co cemented carbide were analyzed.The experimental results show that with the increase of TiC content,the comprehensive properties of WC-8 Co cemented carbide increase firstly and then decrease at room temperature.WC-8 Co cemented carbide with 5%(mass fraction) TiC has better comprehensive mechanical properties.When the sintering temperature and pressure are 1 250 ℃ and 50 MPa,density,Vickers hardness,fracture toughness and flexural strength at room temperature of WC-5 TiC-8 Co cemented carbide are 98.85%,19.49 GPa,9.46 MPa·m1/2 and 1 893 MPa,respectively.The analysis results of cemented carbide densification sintering curve and microstructure morphology show that with the increase of TiC content,the starting temperature for sintering densification of the cemented carbide shifts to a lower temperature,resulting in the fluidity of Co phase deteriorating and the densification sintering condition worsening.The pores in the samples increase,leading to the decrease of Vickers hardness and mechanical properties of cemented carbide.
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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:
WC-8 Co cemented carbide with different TiC contents was prepared by spark plasma sintering technology.The effects of TiC content on the relative density,mechanical properties and microstructure of WC-8 Co cemented carbide were analyzed.The experimental results show that with the increase of TiC content,the comprehensive properties of WC-8 Co cemented carbide increase firstly and then decrease at room temperature.WC-8 Co cemented carbide with 5%(mass fraction) TiC has better comprehensive mechanical properties.When the sintering temperature and pressure are 1 250 ℃ and 50 MPa,density,Vickers hardness,fracture toughness and flexural strength at room temperature of WC-5 TiC-8 Co cemented carbide are 98.85%,19.49 GPa,9.46 MPa·m1/2 and 1 893 MPa,respectively.The analysis results of cemented carbide densification sintering curve and microstructure morphology show that with the increase of TiC content,the starting temperature for sintering densification of the cemented carbide shifts to a lower temperature,resulting in the fluidity of Co phase deteriorating and the densification sintering condition worsening.The pores in the samples increase,leading to the decrease of Vickers hardness and mechanical properties of cemented carbide.
quote
| GB/T 7714-2015 | [1] ZHOU Han-xiang, WANG Zhen-hua, JIA Ji-heng. Effects of TiC Content on the Mechanical Properties and Microstructure of Ultrafine Grained WC-8Co Cemented Carbides[J]. Rare Metals and Cemented Carbides, 2020(2): 75-81. |
| MLA | [1] ZHOU Han-xiang, et al., "Effects of TiC Content on the Mechanical Properties and Microstructure of Ultrafine Grained WC-8Co Cemented Carbides." Rare Metals and Cemented Carbides, no. 2, 2020, pp. 75-81. |
| APA | [1] ZHOU Han-xiang, WANG Zhen-hua, & JIA Ji-heng. (2020). Effects of TiC Content on the Mechanical Properties and Microstructure of Ultrafine Grained WC-8Co Cemented Carbides. Rare Metals and Cemented Carbides(2), 75-81. |
| IEEE | [1] ZHOU Han-xiang, WANG Zhen-hua, and JIA Ji-heng, "Effects of TiC Content on the Mechanical Properties and Microstructure of Ultrafine Grained WC-8Co Cemented Carbides," Rare Metals and Cemented Carbides, no. 2, pp. 75-81, 2020. keywords: {WC-8Co cemented carbide;TiC content;spark plasma sintering;microstructure;mechanical property} |