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The XRD,TEM,PAT,Curie temperature and internal friction methods were used to study systematically the embrittlement mechanism of rapidly quenched(RQ) nanocrystalline soft magnetic alloy Fe_(73.5)Cu_1Nb_3Si_(13.5)B_9.The test results confirmed that the RQ embrittlement mechanism of amorphous alloy FeCuNbSiB was not related to crystallization but that was related to structural relaxation.Furthermore,the structural relaxation temperature of amorphous alloy FeCuNbSiB was much lower than that of used commonly amorphous alloy Fe_(78)B_(13)Si_9.It meant that the RQ embrittlement is easier to happen for nanocrystalline alloy FeCuNbSiB than amorphous alloy Fe-B-Si.
The XRD, TEM, PAT, Curie temperature and internal friction methods were used to study systematically the embrittlement mechanism of rapidly quenched (RQ) nanocrystalline soft magnetic alloy Fe_ (73.5) Cu_1Nb_3Si_ (13.5) B_9.The test results confirmed that the the RQ embrittlement mechanism of amorphous alloy FeCuNbSiB was not related to crystallization but that was related to structural relaxation. Still further, the structural relaxation temperature of amorphous alloy FeCuNbSiB was much lower than that of commonly used amorphous alloy Fe_ (78) B_ (13) Si_9.It that that the RQ embrittlement is easier to happen for nanocrystalline alloy FeCuNbSiB than amorphous alloy Fe-B-Si.