本研究主要探討鐵鈀鐵磁性形狀記憶合金分別在不同退火溫度的磁致應變與微結構比較。使用真空電弧熔煉鑄造方式製備鐵鈀合金，在熔煉爐內通以保護氣氛以電弧將鐵與鈀塊材熔煉成合金，經由退火1000°C、1100°C以及1250°C 36h後淬火等熱處理過程。以EDS分析淬火後試片之成分，DSC分析其麻田散體相轉換溫度，並以XRD測量其晶體結構，並以電子背向散射繞射(Electron Back Scattering Diffraction, EBSD)技術分析其晶粒方向分佈，以及麻田散體的優選取向(preferred orientation)並進行FCT及FCC相鑑定，表面形貌以OM觀察，並藉由VSM量取磁滯曲線，以及DIC(Digital Image Correlation)量測磁致應變。
在不同退火溫度後淬火的麻田散體，可由結構分析發現均含有
FCT麻田散體雙晶結構，並可由相變態分析知FCT為可逆麻田散體，在物理性質上皆為軟磁性質，矯頑磁力均低於20 Oe，且易磁化軸均位於x軸。磁致應變分析中發現，外加磁場小於7500Oe以下，隨著磁場的增加，晶粒大小愈大在x軸方向的平均應變量愈大。從單一麻田散體晶粒來看的磁致應變分析中可得晶體優選取向為(5 0 3)的平均應變量最大，其應變量為0.218%。

This study focused on iron palladium ferromagnetic shape memory alloys at different annealing temperatures of magnetostriction compared with microstructures. Fe-Pd alloys were produced by a vacuum arc-melting furnace using protecting atmosphere, and quenching after annealing 1000 °C, 1100 °C and 1250 °C 36h heat treatment process obtained. The chemical components of the specimen after quenching were measured by EDS. The temperature of phase transformation was obtained by DSC. The crystal structures were measured by XRD, and EBSD (Electron Back Scattering Diffraction) technique analyzed the orientation of martensite grain, the preferred orientation of martensite, and identified FCT and FCC phase. Surface morphology and martensite plates distance were observed by OM. The hysteresis loop was measured using VSM, and use DIC (Digital Image Correlation) analysis technique to measure magnetostriction.
After quenching at different annealing temperature of martensite can find FCT twin martensite structure by structural analysis. Phase transformation experiments can know as the reversible martensite FCT. That are all soft magnetic materials on the physical properties, the coercivies are lower than 20 Oe, and the easy magnetization axis are located in the x-axis. Magnetostriction analysis found that the magnetic field is less than 7500Oe, as the magnetic field increases, the larger grain size the average strain should be greater in the x-axis. From one martensite grain analysis, the average magnetostriction which was 0.218% were the largest at preferred orientation (503).

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