Gas Nitriding and Microstructure of Micro-crystalline Sm-Fe Alloy Produced by Rapid Quenching Process AITranslate
Abstract AITranslate
Micro-crystalline alloys which produced by rapid solidification technologies could have better properties than as-cast alloys.Some Sm-Fe alloys were prepared under different cooling rates in the vacuum rotary quenching furnace.The microstructure and phase composition of the microstructure were studied and gas nitridation was carried out.The results show that with the increase of rapid cooling rate,the segregation of elements in the alloy decreases,and the microstructure of the alloy changes from coarse dendrite to microcrystalline.When the cooling rate reached to 24.0m/s,the alloy with a microcrystalline microstructure could be obtained.The grain growth tendency of microcrystalline Sm-Fe alloy is very small under the condition of direct nitriding of the alloy at 420℃.The grain size is small and the grain boundary area increases,which makes the effective nitriding points increase and promotes the diffusion of nitrogen atoms. However,nitrogen atoms are mainly distributed at grain boundaries in the form of nitrogen compounds, resulting in uneven nitridation between grain boundaries and grain interiors.
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Basic Information:
DOI：
Chinese Library Classification Number:TG146.4[金属学及工艺—金属材料]
Citation Information:
Micro-crystalline alloys which produced by rapid solidification technologies could have better properties than as-cast alloys.Some Sm-Fe alloys were prepared under different cooling rates in the vacuum rotary quenching furnace.The microstructure and phase composition of the microstructure were studied and gas nitridation was carried out.The results show that with the increase of rapid cooling rate,the segregation of elements in the alloy decreases,and the microstructure of the alloy changes from coarse dendrite to microcrystalline.When the cooling rate reached to 24.0m/s,the alloy with a microcrystalline microstructure could be obtained.The grain growth tendency of microcrystalline Sm-Fe alloy is very small under the condition of direct nitriding of the alloy at 420℃.The grain size is small and the grain boundary area increases,which makes the effective nitriding points increase and promotes the diffusion of nitrogen atoms. However,nitrogen atoms are mainly distributed at grain boundaries in the form of nitrogen compounds, resulting in uneven nitridation between grain boundaries and grain interiors.
quote
| GB/T 7714-2015 | [1] SONG Chun-yan, WANG Shu-huan, ZHANG Kai-xuan, et al. Gas Nitriding and Microstructure of Micro-crystalline Sm-Fe Alloy Produced by Rapid Quenching Process[J]. Rare Metals and Cemented Carbides, 2018(6): 81-85. |
| MLA | [1] SONG Chun-yan, et al., "Gas Nitriding and Microstructure of Micro-crystalline Sm-Fe Alloy Produced by Rapid Quenching Process." Rare Metals and Cemented Carbides, no. 6, 2018, pp. 81-85. |
| APA | [1] SONG Chun-yan, WANG Shu-huan, ZHANG Kai-xuan, & ZHAO Ding-guo. (2018). Gas Nitriding and Microstructure of Micro-crystalline Sm-Fe Alloy Produced by Rapid Quenching Process. Rare Metals and Cemented Carbides(6), 81-85. |
| IEEE | [1] SONG Chun-yan, WANG Shu-huan, ZHANG Kai-xuan, and ZHAO Ding-guo, "Gas Nitriding and Microstructure of Micro-crystalline Sm-Fe Alloy Produced by Rapid Quenching Process," Rare Metals and Cemented Carbides, no. 6, pp. 81-85, 2018. keywords: {rapid quenching;microcrystalline;Sm-Fe alloys;nitriation;microstructure} |