Acta Metall Sin  1988, Vol. 24 Issue (3): 293-295    DOI:

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VARIATION OF YOUNG'S MODULUS WITH TEMPERATURE IN Nd-Fe-B MAGNET

LUO Yang;ZHANG Ning Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; BeijingSenior Engineer;Dept. of precision Alloys Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing

LUO Yang;ZHANG Ning Central Iron and Steel Research Institute; Ministry of Metallurgical Industry; BeijingSenior Engineer;Dept. of precision Alloys Central Iron and Steel Research Institute;Ministry of Metallurgical Industry;Beijing. VARIATION OF YOUNG'S MODULUS WITH TEMPERATURE IN Nd-Fe-B MAGNET. Acta Metall Sin, 1988, 24(3): 293-295.

Abstract References Related Articles Recommended Metrics Download:  PDF(228KB)  Export:  BibTeX | EndNote (RIS)       Abstract  Young's modulus of Nd-Fe-B magnet within temperature range from 25 to 800℃was measured by means of ultrasonic resonance. E_∥ measured along c-axis is always smaller thanE_⊥, measured perpendicular to c-axis. The relative difference of Young's modulus (E_⊥-E_∥)/E_⊥=2.2% at room temperature remains almost the same till 500℃, whereas increases very sharplywhen T>500℃. Taking the value of aboat 12% at 600℃, i.e. 5 times more than the value atroom temperature. There is a step following a steep fall of both E_∥ and B_⊥ within the tempera-ture range of 550--600℃, which may be attributed to the melting of Nd-rich phase in the mag-net. Since Young's modulus reflects mainly the strength of bonding between atoms, i. e. thestiffness of the materials, the obtained results imply that the anisotropy of stiffness for Nd-Fe-Bmagnets becomes much higher at temperature above 600℃. Both the high anisotropy of stiff-ness and the remarkable softening at T>600℃ provide evidences for the mechanism of inducedtexture due to hot pressing. Key words:  Nd-Fe-B magnet      Young's modulus      thermal strain      texture      Received:  18 March 1988      Service E-mail this article Add to citation manager E-mail Alert RSS （） Articles by authors URL:  https://www.ams.org.cn/EN/     OR     https://www.ams.org.cn/EN/Y1988/V24/I3/293 1 罗阳,张宁.金属学报,1987;23(1) :A95 2 高占武.高温弹性模量测量新技术,1983;未发表 3 Luo Yang, Ning Zhang. Graham C D Jr. J Appl Phys, 1987; 61(8) : 3442 4 Glvord D, Li H S, Morean J M, Tenaud P. J Magn Magn Mater, 1986; 54--57: 445 5 Lee R W, Schaffel N, Brewer E G. IEEE Trans Magn, 1985; MAG-21: 195 [1] CHANG Songtao, ZHANG Fang, SHA Yuhui, ZUO Liang. Recrystallization Texture Competition Mediated by Segregation Element in Body-Centered Cubic Metals[J]. 金属学报, 2023, 59(8): 1065-1074. [2] LIU Lujun, LIU Zheng, LIU Renhui, LIU Yong. Grain Boundary Structure and Coercivity Enhancement of Nd90Al10 Alloy Modified NdFeB Permanent Magnets by GBD Process[J]. 金属学报, 2023, 59(11): 1457-1465. [3] LOU Feng, LIU Ke, LIU Jinxue, DONG Hanwu, LI Shubo, DU Wenbo. Microstructures and Formability of the As-Rolled Mg- xZn-0.5Er Alloy Sheets at Room Temperature[J]. 金属学报, 2023, 59(11): 1439-1447. [4] JIANG Weining, WU Xiaolong, YANG Ping, GU Xinfu, XIE Qingge. Formation of Dynamic Recrystallization Zone and Characteristics of Shear Texture in Surface Layer of Hot-Rolled Silicon Steel[J]. 金属学报, 2022, 58(12): 1545-1556. [5] YANG Ping, WANG Jinhua, MA Dandan, PANG Shufang, CUI Feng'e. Influences of Composition on the Transformation-Controlled {100} Textures in High Silicon Electrical Steels Prepared by Mn-Removal Vacuum Annealing[J]. 金属学报, 2022, 58(10): 1261-1270. [6] DING Ning, WANG Yunfeng, LIU Ke, ZHU Xunming, LI Shubo, DU Wenbo. Microstructure, Texture, and Mechanical Properties of Mg-8Gd-1Er-0.5Zr Alloy by Multi-Directional Forging at High Strain Rate[J]. 金属学报, 2021, 57(8): 1000-1008. [7] YAN Mengqi, CHEN Liquan, YANG Ping, HUANG Lijun, TONG Jianbo, LI Huanfeng, GUO Pengda. Effect of Hot Deformation Parameters on the Evolution of Microstructure and Texture of β Phase in TC18 Titanium Alloy[J]. 金属学报, 2021, 57(7): 880-890. [8] ZUO Liang, LI Zongbin, YAN Haile, YANG Bo, ZHAO Xiang. Texturation and Functional Behaviors of Polycrystalline Ni-Mn-X Phase Transformation Alloys[J]. 金属学报, 2021, 57(11): 1396-1415. [9] XU Zhanyi, SHA Yuhui, ZHANG Fang, ZHANG Huabing, LI Guobao, CHU Shuangjie, ZUO Liang. Orientation Selection Behavior During Secondary Recrystallization in Grain-Oriented Silicon Steel[J]. 金属学报, 2020, 56(8): 1067-1074. [10] YU Lei,LUO Haiwen. Effect of Partial Recrystallization Annealing on Magnetic Properties and Mechanical Properties of Non-Oriented Silicon Steel[J]. 金属学报, 2020, 56(3): 291-300. [11] CHENG Chao,CHEN Zhiyong,QIN Xushan,LIU Jianrong,WANG Qingjiang. Microstructure, Texture and Mechanical Property ofTA32 Titanium Alloy Thick Plate[J]. 金属学报, 2020, 56(2): 193-202. [12] DU Zijie, LI Wenyuan, LIU Jianrong, SUO Hongbo, WANG Qingjiang. Study on the Uniformity of Structure and Mechanical Properties of TC4-DT Alloy Deposited by CMT Process[J]. 金属学报, 2020, 56(12): 1667-1680. [13] Liping DENG,Kaixuan CUI,Bingshu WANG,Hongliang XIANG,Qiang LI. Microstructure and Texture Evolution of AZ31 Mg Alloy Processed by Multi-Pass Compressing Under Room Temperature[J]. 金属学报, 2019, 55(8): 976-986. [14] Xin LI,Yuecheng DONG,Zhenhua DAN,Hui CHANG,Zhigang FANG,Yanhua GUO. Corrosion Behavior of Ultrafine Grained Pure Ti Processed by Equal Channel Angular Pressing[J]. 金属学报, 2019, 55(8): 967-975. [15] Zheng LIU,Jianrong LIU,Zibo ZHAO,Lei WANG,Qingjiang WANG,Rui YANG. Microstructure and Tensile Property of TC4 Alloy Produced via Electron Beam Rapid Manufacturing[J]. 金属学报, 2019, 55(6): 692-700. No Suggested Reading articles found! Viewed Full text Abstract Cited   Shared      Discussed