Shafts intended for magnetomechanical sensors require a combination of mechanical properties and/or characteristics in addition to good magnetic properties. In the case of X46Cr13, this can be attained by the appropriate selection of heat treatment parameters. In fact this study discusses the effect of these parameters on the microstructure, mechanical and magnetic properties of this material.

The B-H curves showed that irrespective of the heat treatment condition, the material was harder to magnetize in the axial direction than circumferentially. Also, quenched and tempered structures were harder to magnetize than those in the annealed condition. Changes in the austenitising temperature or time were not observed to lead to major changes in the B-H curve. On the other hand, increasing the tempering temperature from 350 °C to 500 °C, led to a significant drop in coercivity, attributed to a decrease in M₃C precipitates. This change in coercivity was comparable to that observed as the tempering temperature increased from 500 °C to 600 °C, in which case the matrix structure changed from martensite to ferrite.

Martensitic structures showed a lower magnetic response to a given applied torque than their annealed counterparts. On the other hand, with martensitic structures, the signal to torque relationship remained linear even at high torque values. This was not the case with the annealed structures.

The study concludes that austenitising at 1040 °C for 45 min and tempering at 350 °C and 375 °C for 2 h yields an optimal combination of properties and performance.

用于磁机械传感器的轴除了良好的磁性能外还需要机械性能和/或特性的组合。In the case of X46Cr13, this can be attained by the appropriate selection of heat treatment parameters. 事实上，这项研究讨论了这些参数对这种材料的微观结构、机械和磁性能的影响。

BH 曲线表明，无论热处理条件如何，材料在轴向比周向更难磁化。此外，淬火和回火结构比退火条件下的结构更难磁化。没有观察到奥氏体化温度或时间的变化会导致 BH 曲线的重大变化。另一方面，将回火温度从 350 °C 提高到 500 °C，由于 M ₃ C 析出物的减少，导致矫顽力显着下降。这种矫顽力的变化与回火温度从 500 °C 增加到 600 °C 时观察到的变化相当，在这种情况下，基体结构从马氏体变为铁素体。

马氏体结构对给定施加的扭矩显示出比退火对应物更低的磁响应。另一方面，对于马氏体结构，即使在高扭矩值下，信号与扭矩的关系也保持线性。退火结构的情况并非如此。

研究得出的结论是，在 1040 °C 下奥氏体化 45 分钟，然后在 350 °C 和 375 °C 下回火 2 小时，可实现性能和性能的最佳组合。