CAJ | 학술논문

研究了退火对玻璃包覆Fe_(69)Co_(10)Si_8B_(13)非晶合金微丝磁性能和力学性能的影响.结果表明,退火温度为450℃时,矫顽力和剩磁比最小,轴向和径向矫顽力分别为1.8Oe和8.5Oe,比退火前降低了31%和36%,轴向和径向剩磁比分别为0.031和0.012,比退火前降低了74%和63%.当退火温度低于45℃时,芯丝抗拉强度基本保持不变,平均抗拉强度约2500 Mpa;当退火温度高于450℃时,芯丝抗拉强度迅速降低.未退火及退火温度低于45℃退火时,合金芯丝断口存在少量的脉状花样,且脉状花样及花样交叉的数量越多,所对应的芯丝抗拉强度越高;经500℃以上退火后,放射状撕裂区占芯丝断口大部分面积,芯丝表现出更大的脆性.在450℃20min条件下退火,微丝具有较低的矫顽力和较高的强度,综合性能优良.
연구료퇴화대파리포복Fe_(69)Co_(10)Si_8B_(13)비정합금미사자성능화역학성능적영향.결과표명,퇴화온도위450℃시,교완력화잉자비최소,축향화경향교완력분별위1.8Oe화8.5Oe,비퇴화전강저료31%화36%,축향화경향잉자비분별위0.031화0.012,비퇴화전강저료74%화63%.당퇴화온도저우45℃시,심사항랍강도기본보지불변,평균항랍강도약2500 Mpa;당퇴화온도고우450℃시,심사항랍강도신속강저.미퇴화급퇴화온도저우45℃퇴화시,합금심사단구존재소량적맥상화양,차맥상화양급화양교차적수량월다,소대응적심사항랍강도월고;경500℃이상퇴화후,방사상시렬구점심사단구대부분면적,심사표현출경대적취성.재450℃20min조건하퇴화,미사구유교저적교완력화교고적강도,종합성능우량.
The influence of annealing on the magnetic and mechanical properties of glass-coated Fe_(69)Co_(10)Si_8B_(13) microwires is investigated. The results show that, after annealing at 450℃ for 20min, the axial and radial coercivities of microwire are 1.80e and 8.50e, decreased by 31% and 36% respectively,and the axial and radial remanence ratios are 0. 031 and 0.012, decreased by 74% and 63% respectively, compared with the as-cast microwire. When the annealing temperature is lower than 450℃ , the tensile strength of metal core is almost invariant, and the average tensile strength is about 2500MPa. When the annealing temperature is higher than 450℃ , the core tensile strength decreases sharply. The fracture surfaces of the cores, being as-cast or annealed at lower than 450℃ , all show some vein-like patterns, and the tensile strength increases with the amount of the vein-like patterns as well as their cross increasing, but the radial tearing band is the main features of the fracture surfaces of the cores after annealing at the temperature higher than 500℃ , and the core becomes more brittle. When annealing at 450℃ for 20min, the metal core exhibits lower coercivity and higher strength.