Effect of Copper Mold Spray Casting on Microstructure and Phase Composition of Sm-Fe Alloy AITranslate
Abstract AITranslate
The rapid solidification samples of Sm-Fe alloy were prepared by copper mold spray casting.The cooling rate of Sm-Fe alloy in copper mold was calculated by the unsteady heat conduction equation of thin material.The changes of microstructure and phase of Sm-Fe alloy during rapid solidification after nitrogen spray casting were studied by means of optical microscope,scanning electron microscope,energy spectrometer,X-ray diffractometer and X-ray photoelectron spectrometer.The results show that the cooling rate of molten Sm-Fe alloy is about 16.8 K/s after it is sprayed into the copper mold by nitrogen gas.The relatively large cooling rate makes the dendrite spacing obviously decreased,promotes grain refinement of the alloy,and restrains interdiffusion of the phases,resulting in more homogeneous composition of the alloy.The nitridation reaction is basically carried out only on the surface of the casting sample,and the products are mainly Sm2Fe17Nx and nitrogen hydroxides with relative contents of 34.36% and 65.64%,respectively.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.45[金属学及工艺—金属材料]
Citation Information:
The rapid solidification samples of Sm-Fe alloy were prepared by copper mold spray casting.The cooling rate of Sm-Fe alloy in copper mold was calculated by the unsteady heat conduction equation of thin material.The changes of microstructure and phase of Sm-Fe alloy during rapid solidification after nitrogen spray casting were studied by means of optical microscope,scanning electron microscope,energy spectrometer,X-ray diffractometer and X-ray photoelectron spectrometer.The results show that the cooling rate of molten Sm-Fe alloy is about 16.8 K/s after it is sprayed into the copper mold by nitrogen gas.The relatively large cooling rate makes the dendrite spacing obviously decreased,promotes grain refinement of the alloy,and restrains interdiffusion of the phases,resulting in more homogeneous composition of the alloy.The nitridation reaction is basically carried out only on the surface of the casting sample,and the products are mainly Sm2Fe17Nx and nitrogen hydroxides with relative contents of 34.36% and 65.64%,respectively.
quote
| GB/T 7714-2015 | [1] SONG Chun-yan, CHENG Shi-wei, WANG Shu-huan, et al. Effect of Copper Mold Spray Casting on Microstructure and Phase Composition of Sm-Fe Alloy[J]. Rare Metals and Cemented Carbides, 2019(5): 37-42. |
| MLA | [1] SONG Chun-yan, et al., "Effect of Copper Mold Spray Casting on Microstructure and Phase Composition of Sm-Fe Alloy." Rare Metals and Cemented Carbides, no. 5, 2019, pp. 37-42. |
| APA | [1] SONG Chun-yan, CHENG Shi-wei, WANG Shu-huan, ZHAO Ding-guo, & HU Li-guang. (2019). Effect of Copper Mold Spray Casting on Microstructure and Phase Composition of Sm-Fe Alloy. Rare Metals and Cemented Carbides(5), 37-42. |
| IEEE | [1] SONG Chun-yan, CHENG Shi-wei, WANG Shu-huan, ZHAO Ding-guo, and HU Li-guang, "Effect of Copper Mold Spray Casting on Microstructure and Phase Composition of Sm-Fe Alloy," Rare Metals and Cemented Carbides, no. 5, pp. 37-42, 2019. keywords: {Sm-Fe alloy;copper mold spray casting;rapid solidification;microstructure morphology;phase composition;cooling rate} |