Effect of Tungsten Additive on Structural Transformations in Alloys of the Fe – Cr – Co – Ti System

Processing of silicon added Fe-Cr-Co hard magnetic alloy by two stage thermomagnetic treatment technique

“…It can be seen that the first peak observed at 570°C. As per phase diagram mentioned by Zhukova et al, 29 this peak corresponds to the transformation of a ''alpha'' phase to g ''gamma'' and s ''sigma'' phase. On further increase in temperature, the exothermic behavior of the three curves continues till the temperature rises to around 800°C.…”

Experimental Study on the Grinding of an Fe-Cr-Co Permanent Magnet Alloy under a Small Cutting Depth

“…In recent years, with the development of science and technology, the machining precision of magnetic materials has become more and more important. Most investigations have mainly been focused on the effect of various factors on the magnetic properties and structure of Fe-Cr-Co permanent magnet alloys, including heat treatment processes [11][12][13], temperature and mechanical treatment [14][15][16][17][18] and changed alloy elements [19][20][21][22]. For example, Wu Xin et al found that alloy treated with solid solution and thermal magnetic and multi-step aging exhibited better magnetic properties when saline water was used as the solution coolant [11], while Liu Yan et al found that Fe-Cr-Co permanent magnets under the action of low-frequency vibration force, there would be a regular demagnetization increase phenomenon, but vibration to a certain time, the magnetic properties basically tend to constant.…”

“…[15]. Furthermore, E. V. Belozerov et al reported hard magnetic (Fe-22% Cr-15% Co) alloys with high strength and plasticity, and sufficiently high magnetic properties were obtained by the doping of alloys with tungsten and gallium [20,21]. However, few investigations on the effect of grinding on the performance of Fe-Cr-Co permanent magnetic alloys have been reported.…”