Study on Ball Milling Process of Bimodal-grained WC-6%Co Cemented Carbides AITranslate
Abstract AITranslate
Using WC with particle size of 0.9 μm and 2.4 μm and Co as raw materials, the bimodal-grained WC-6%Co cemented carbides were fabricated by conventional roller ball milling and following vacuum sintering.The phase change and microstructure morphology of alloys were observed by XRD and SEM,and the effect of ball milling on the comprehensive mechanical properties of the alloy was studied by comparing the density, hardness, coercive force, bending strength and fracture toughness.The results show that with the increase of milling time and ball-to-powder ratio, WC grains gradually grow up, the percentage of(0001) basal plane of the alloy significantly increases, and the ratio of (1010) prism plane decreases.Compared with the ball milling time, increasing the ball-to-powder ratio can break and activate the fine WC particles.The comprehensive properties of the alloy prepared by pre-milling for 24 h with ball-to-powder ratio of 4∶1 and mixed ball milling for 24 h with ball-to-powder ratio of 2∶1 are the best, its density, hardness and coercive force are excellent, the bending strength is up to 3 250 MPa, and the fracture toughness reaches 11.5 MPa·m1/2.
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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:
Using WC with particle size of 0.9 μm and 2.4 μm and Co as raw materials, the bimodal-grained WC-6%Co cemented carbides were fabricated by conventional roller ball milling and following vacuum sintering.The phase change and microstructure morphology of alloys were observed by XRD and SEM,and the effect of ball milling on the comprehensive mechanical properties of the alloy was studied by comparing the density, hardness, coercive force, bending strength and fracture toughness.The results show that with the increase of milling time and ball-to-powder ratio, WC grains gradually grow up, the percentage of(0001) basal plane of the alloy significantly increases, and the ratio of (1010) prism plane decreases.Compared with the ball milling time, increasing the ball-to-powder ratio can break and activate the fine WC particles.The comprehensive properties of the alloy prepared by pre-milling for 24 h with ball-to-powder ratio of 4∶1 and mixed ball milling for 24 h with ball-to-powder ratio of 2∶1 are the best, its density, hardness and coercive force are excellent, the bending strength is up to 3 250 MPa, and the fracture toughness reaches 11.5 MPa·m1/2.
quote
| GB/T 7714-2015 | [1] XIAGN Xin, DONG Ding-qian, GU Jin-bao, et al. Study on Ball Milling Process of Bimodal-grained WC-6%Co Cemented Carbides[J]. Rare Metals and Cemented Carbides, 2021(2): 82-89. |
| MLA | [1] XIAGN Xin, et al., "Study on Ball Milling Process of Bimodal-grained WC-6%Co Cemented Carbides." Rare Metals and Cemented Carbides, no. 2, 2021, pp. 82-89. |
| APA | [1] XIAGN Xin, DONG Ding-qian, GU Jin-bao, YANG Wei, CHEN Li-fei, SHI Kai-hua, & ZHAO Yi. (2021). Study on Ball Milling Process of Bimodal-grained WC-6%Co Cemented Carbides. Rare Metals and Cemented Carbides(2), 82-89. |
| IEEE | [1] XIAGN Xin, DONG Ding-qian, GU Jin-bao, YANG Wei, CHEN Li-fei, SHI Kai-hua, and ZHAO Yi, "Study on Ball Milling Process of Bimodal-grained WC-6%Co Cemented Carbides," Rare Metals and Cemented Carbides, no. 2, pp. 82-89, 2021. keywords: {bimodal grain;cemented carbide;ball milling process;mechanical property} |