Scholarlink

<p>Addition of 0.5% Cr to the Fe<sub>65</sub>Co<sub>35</sub> alloy resulted in an increase of hardness (215 HV to 296 HV), stiffness, and total magnetostriction from 23 × 10<sup>−6</sup> to 65 × 10<sup>−6</sup>. This alloy exhibited also the highest relative magnetic permeability and lowest coercive field among all the alloys studied, reaching <i>μ</i><sub><i>r</i></sub> = 1020 in an applied field of only 360 A m<sup>−1</sup> and <i>H</i><sub><i>c</i></sub> = 650 A m<sup>−1</sup> (8.2 Oe). Consistent results among hardness, stiffness, EBSD, and magnetization as a function of temperature reasonably indicate that BCC ordering is present in the Fe<sub>65</sub>Co<sub>35</sub> alloy and in the Cr added alloy; however, Cr + Ti added alloy would be single phased, either fully disordered or fully ordered. Magnetization thermal hysteresis (ΔM) occurs because of strong internal stress development due to Fe<sub>65</sub>Co<sub>35</sub> and Cr-added alloy sample rapid cooling, Δ<i>M</i> being wider for Cr-added alloy. Results of hardness, stiffness, EBSD, and Δ<i>M</i> permitted the conclusion that in Cr-added alloy, internal stresses are stronger than in Fe<sub>65</sub>Co<sub>35</sub> alloy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Influence of Ordering and Internal Stresses on the Saturation Magnetization and Magnetostriction of Fe65Co35 Alloy with Cr and Cr Plus Ti Additions

  • 期刊论文

  • 发表日期：

    2025年8月26日

查看全文
  • Fernando Froes,
  • Iris Braga Silva,
  • João Vitor Lisboa Silva,
  • Higor Natan Alves Ferreira,
  • Cristina Bormio-Nunes

摘要

Addition of 0.5% Cr to the Fe65Co35 alloy resulted in an increase of hardness (215 HV to 296 HV), stiffness, and total magnetostriction from 23 × 10−6 to 65 × 10−6. This alloy exhibited also the highest relative magnetic permeability and lowest coercive field among all the alloys studied, reaching μr = 1020 in an applied field of only 360 A m−1 and Hc = 650 A m−1 (8.2 Oe). Consistent results among hardness, stiffness, EBSD, and magnetization as a function of temperature reasonably indicate that BCC ordering is present in the Fe65Co35 alloy and in the Cr added alloy; however, Cr + Ti added alloy would be single phased, either fully disordered or fully ordered. Magnetization thermal hysteresis (ΔM) occurs because of strong internal stress development due to Fe65Co35 and Cr-added alloy sample rapid cooling, ΔM being wider for Cr-added alloy. Results of hardness, stiffness, EBSD, and ΔM permitted the conclusion that in Cr-added alloy, internal stresses are stronger than in Fe65Co35 alloy.