Ageing effects in Nd(Dy)Fe(Nb)B alloys and magnets

P. A. Withey; E. J. Devlin; J. S. Abell; I. R. Harris

doi:10.1016/0304-8853(89)90326-0

Ageing effects in Nd(Dy)Fe(Nb)B alloys and magnets

P. A. Withey^*, E. J. Devlin, J. S. Abell, I. R. Harris

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

Abstract

The variations of microhardness with ageing time of bulk alloys of Nd₁₅Fe₇₇B₈ and Nd_14.5Dy_1.5Nb_1.0Fe_76.0B_7.0 have been investigated, the alloys being first quenched from 1373 K. The data on the Nd₁₅Fe₇₇B₈ alloy indicate a low temperature ageing phenomenon which results in a sharp spike in the microhardness which is temperature dependent. An approximate activation energy has been obtained. Similar studies on the stoichiometric Nd₂Fe₁₄B alloy did not reveal a similar anomaly. Distinctly different microhardness behaviour was observed in the Nb-containing alloy. The microhardness changes in the alloys have been correlated with changes in the magnetic properties.

Original language	English
Pages (from-to)	67-70
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	80
Issue number	1
DOIs	https://doi.org/10.1016/0304-8853(89)90326-0
Publication status	Published - 1 Aug 1989

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

Access to Document

10.1016/0304-8853(89)90326-0

Cite this

@article{ff3138cab9d945af970fe8772a50a287,

title = "Ageing effects in Nd(Dy)Fe(Nb)B alloys and magnets",

abstract = "The variations of microhardness with ageing time of bulk alloys of Nd15Fe77B8 and Nd14.5Dy1.5Nb1.0Fe76.0B7.0 have been investigated, the alloys being first quenched from 1373 K. The data on the Nd15Fe77B8 alloy indicate a low temperature ageing phenomenon which results in a sharp spike in the microhardness which is temperature dependent. An approximate activation energy has been obtained. Similar studies on the stoichiometric Nd2Fe14B alloy did not reveal a similar anomaly. Distinctly different microhardness behaviour was observed in the Nb-containing alloy. The microhardness changes in the alloys have been correlated with changes in the magnetic properties.",

author = "Withey, \{P. A.\} and Devlin, \{E. J.\} and Abell, \{J. S.\} and Harris, \{I. R.\}",

year = "1989",

month = aug,

day = "1",

doi = "10.1016/0304-8853(89)90326-0",

language = "English",

volume = "80",

pages = "67--70",

journal = "Journal of Magnetism and Magnetic Materials",

issn = "0304-8853",

publisher = "Elsevier",

number = "1",

}

TY - JOUR

T1 - Ageing effects in Nd(Dy)Fe(Nb)B alloys and magnets

AU - Withey, P. A.

AU - Devlin, E. J.

AU - Abell, J. S.

AU - Harris, I. R.

PY - 1989/8/1

Y1 - 1989/8/1

N2 - The variations of microhardness with ageing time of bulk alloys of Nd15Fe77B8 and Nd14.5Dy1.5Nb1.0Fe76.0B7.0 have been investigated, the alloys being first quenched from 1373 K. The data on the Nd15Fe77B8 alloy indicate a low temperature ageing phenomenon which results in a sharp spike in the microhardness which is temperature dependent. An approximate activation energy has been obtained. Similar studies on the stoichiometric Nd2Fe14B alloy did not reveal a similar anomaly. Distinctly different microhardness behaviour was observed in the Nb-containing alloy. The microhardness changes in the alloys have been correlated with changes in the magnetic properties.

AB - The variations of microhardness with ageing time of bulk alloys of Nd15Fe77B8 and Nd14.5Dy1.5Nb1.0Fe76.0B7.0 have been investigated, the alloys being first quenched from 1373 K. The data on the Nd15Fe77B8 alloy indicate a low temperature ageing phenomenon which results in a sharp spike in the microhardness which is temperature dependent. An approximate activation energy has been obtained. Similar studies on the stoichiometric Nd2Fe14B alloy did not reveal a similar anomaly. Distinctly different microhardness behaviour was observed in the Nb-containing alloy. The microhardness changes in the alloys have been correlated with changes in the magnetic properties.

UR - https://www.scopus.com/pages/publications/0024716628

U2 - 10.1016/0304-8853(89)90326-0

DO - 10.1016/0304-8853(89)90326-0

M3 - Article

AN - SCOPUS:0024716628

SN - 0304-8853

VL - 80

SP - 67

EP - 70

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1

ER -

Ageing effects in Nd(Dy)Fe(Nb)B alloys and magnets

Abstract

ASJC Scopus subject areas

Access to Document

Fingerprint

Cite this