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摘自冶金部钢铁研究总院研究生夏天舒的硕士学位论文,导师:罗阳 自第三代稀土永磁材料——NdFeB问世以来,因其性能、价格比优异而受到应用界的重视。新近开发的铸造热形变工艺,由于可将RE-Fe-B(RE=Pr,Nd)铸锭直接制成具有所需外形和磁各向异性、完全致密的高性能磁体,而格外引人注目。RE-Fe-B铸锭主相RE_2Fe_(14)B的熔点T_m约为1500 K,而铸锭的热变形温度一般为850～1100℃,亦即0.75～0.90 T_m,故此时的变形属于高温变形的范围。本文是在
From the third generation of rare earth permanent magnet material - NdFeB since its advent of the performance, price ratio excellent by the application of the industry’s attention. The newly developed casting thermal deformation process is particularly noticeable as the RE-Fe-B (RE = Pr, Nd) ingot can be made directly into a fully dense, high performance magnet with the desired shape and magnetic anisotropy . RE-Fe-B ingot main phase RE_2Fe_ (14) B melting point T_m is about 1500K, and ingot heat distortion temperature is generally 850 ~ 1100 ℃, that is 0.75 ~ 0.90 T_m, so the deformation is high temperature deformation Range. This article is in