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Updated: Jun 27, 2026

Processing of Bulk Nanocrystalline Metals at the US Army Research Laboratory
Published on: March 7, 2018
The Influence of Hot-Pressing and Hot-Deformation Process Parameters on the Performance and Structural Evolution of
Wenliang Xie1, Yu Wang1, Jianlong Fu1
1State Key Laboratory of Baiyunobo Rare Earth Resource Researches and Comprehensive Utilization, Baotou Research Institute of Rare Earths, Baotou 014030, China.
Abstract:
High-cerium NdFeB magnets represent an effective approach for balanced utilization of light rare-earth resources. However, morphology of the grains is highly susceptible to processing parameters, and improper settings can result in extremely low performance during hot-pressing and hot-deformation processes. In this paper, the influence of process parameters on the magnetic properties and microstructure of Nd15Ce15(CoFeGa)balB0.92 magnets was clarified by adjusting the conditions of hot-pressing and hot-deformation processes, combined with performance testing and microstructural observation. It was observed that the number of coarse-grained regions within the magnets was significantly reduced, with a substantial decrease in coarse-grain size, and uniform primary phase grains were obtained by adjusting parameters to control the morphology of the grains.
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