| TRANSFORMATION OF Nd_(14)Fe_(73)Co_6B_7 ALLOY UNDER HYDROGEN TREATMENT |
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| 作者姓名： | LIU Jian QIU Baoqin LIU Muyi XIAO Yaofu University of Science and Technology Beijing Beijing China associate professor |
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| 作者单位： | LIU Jian QIU Baoqin LIU Muyi XIAO Yaofu University of Science and Technology Beijing，Beijing，China associate professor，Department of Materials，University of Science and Technology Beijing，Beijing 100083，China |
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| 摘 要： | The phase constitution and variation of Nd_(14)Fe_(73)Co_6B_7 alloy after hydriding and subsequentdehydriding treatment at 770℃ have been investigated respectively by means of X-raydiffraction,SEM,TEM and magnetic measurement techniques.The original coarse,as castgrain structure,is dissolved into α-Fe,Nd hydride and Fe_2B mixture with average dimensionof 0.1 μm,during hydriding process,and subsequently the triphase mixture recombined intofinely unique Nd_2Fe_(14)B phase with dimension of 0.3 μm by desorbing the hydrogen.It wasfound that the Nd-rich phase distributed at the boundary of as-cast grain structure diffusedinto matrix Nd_2Fe_(14)B grain during hydriding.It remains during dehydriding and distributehomogeneously around some colonies composed of fine grains of Nd_2Fe_(14)B.
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| 收稿时间： | 1993-12-25 |
| 修稿时间： | 1993-12-25 |
TRANSFORMATION OF Nd_(14)Fe_(73)Co_6B_7 ALLOY UNDER HYDROGEN TREATMENT |
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| LIU Jian QIU Baoqin LIU Muyi XIAO Yaofu University of Science and Technology Beijing,Beijing,China associate professor,.TRANSFORMATION OF Nd_(14)Fe_(73)Co_6B_7 ALLOY UNDER HYDROGEN TREATMENT[J].Acta Metallurgica Sinica(English Letters),1993,6(6):379-382. |
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| Authors: | LIU Jian QIU Baoqin LIU Muyi XIAO Yaofu University of Science and Technology Beijing Beijing China associate professor |
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| Affiliation: | LIU Jian QIU Baoqin LIU Muyi XIAO Yaofu University of Science and Technology Beijing,Beijing,China associate professor,Department of Materials,University of Science and Technology Beijing,Beijing,China |
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| Abstract: | The phase constitution and variation of Nd_(14)Fe_(73)Co_6B_7 alloy after hydriding and subsequent dehydriding treatment at 770℃ have been investigated respectively by means of X-ray diffraction,SEM,TEM and magnetic measurement techniques.The original coarse,as cast grain structure,is dissolved into α-Fe,Nd hydride and Fe_2B mixture with average dimension of 0.1 μm,during hydriding process,and subsequently the triphase mixture recombined into finely unique Nd_2Fe_(14)B phase with dimension of 0.3 μm by desorbing the hydrogen.It was found that the Nd-rich phase distributed at the boundary of as-cast grain structure diffused into matrix Nd_2Fe_(14)B grain during hydriding.It remains during dehydriding and distribute homogeneously around some colonies composed of fine grains of Nd_2Fe_(14)B. |
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| Keywords: | Nd_(14)Fe_(73)Co_6B_7 Nd-rich phase phase transformation hydriding |
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