<![CDATA[ABSTRAK PENGARUH TEMPERATUR ANIL TERHADAP JENIS DAN UKURAN PRESIPITAT FASE KEDUA PADA PADUAN Zr-1%Nb-1%Sn-1%Fe. Penelitian ini bertujuan untuk menganalisis fase Zr-1%Nb-1%Sn-1%Fe hasil sintesis. Ingot dibuat dengan peleburan busur tunggal. Selanjutnya sampel dianil pada temperatur 400, 500, 600, 700 dan 800 °C selama 2 jam. Analisis difokuskan pada presipitat fase kedua (secondary phase precipitate - SPP). Identifikasi fase berdasarkan pola difraksi sinar-X dan dibantu dengan data JCPDF (Joint Committee Powder Diffraction File). Hasil pola difraksi beserta datanya dianalisis secara manual, tidak dapat langsung sesuai dengan data JCPDF sebab adanya distorsi terutama dari SPP. Dari hasil analisis disimpulkan sebagai berikut. Pada temperatur anil 400, 500 dan 700 °C pengintian partikel fase kedua SPP terjadi dengan baik. Untuk paduan Zr-1%Nb-1%Sn-1%Fe pada temperatur anil antara 400 °C sampai dengan 800 °C ditemukan SPP Fe2Nb, ZrSn2, FeSn, SnZr, NbSn2, Zr0,68Nb0,25Fe0,08, Fe2Nb0,4Zr0,6, Fe37Nb9Zr54 dan w-Zr. Stabilisasi presipitat terjadi dengan baik pada temperatur anil 800 °C, pertumbuhan presipitat antara 500 °C sampai dengan 600 °C, dan minimisasi ukuran presipitat pada temperatur anil 700 °C. KATA KUNCI: paduan Zr-1%Nb-1%Sn-1%Fe, peleburan busur tunggal, pola difraksi sinar-X, JCPDF, temperatur anil, Fe2Nb, ZrSn2, FeSn, SnZr, NbSn2, Zr0,68Nb0,25Fe0,08, Fe2Nb0,4Zr0,6, Fe37Nb9Zr54, w-Zr ABSTRACT EFFECT OF ANNEALING TEMPERATURE ON THE TYPE AND SIZE OF THE SECONDARY PHASE PRECIPITATE IN Zr-1%Nb-1%Sn-1%Fe ALLOY. The objective of this research is to analyze the phases present in Zr-1%Nb-1%Sn-1%Fe alloy obtained from synthesis. The ingot was prepared by single spark melting. The samples were then annealed at temperatures of 400, 500, 600, 700 and 800 °C for 2 hours. The analysis was focused on the secondary phase precipitate (SPP). The phases were identified based on the X-ray diffraction pattern supported by the Joint Committee Powder Diffraction File (JCPDF). The results of the diffraction pattern along with the data were analyzed manually, and not directly using the JCPDF data because of the distortion of the SPP. The results of the analysis were concluded as follows. The nucleation of the secondary phase precipitate (SPP) was agreeable at the annealing temperatures of 400, 500, and 700 °C. For the Zr-1%Nb-1%Sn-1%Fe alloy at temperatures from 400 °C to 800 °C precipitates of Fe2Nb, ZrSn2, FeSn, SnZr, NbSn2, Zr0.68Nb0.25Fe0.08, Fe2Nb0.4Zr0.6, Fe37Nb9Zr54 and w-Zr were observed. Satisfactory precipitate stabilization was obtained at an annealing temperature of 800 °C, precipitate growth at temperatures between 500 and 600 °C, and precipitate size minimization at a temperature of 700 °C. FREE TERMS: Zr-1%Nb-1%Sn-1%Fe alloy, single spark melting, x-ray diffraction pattern, JCPDF, annealing temperature, Fe2Nb, ZrSn2, FeSn, SnZr, NbSn2, Zr0.68Nb0.25Fe0.08, Fe2Nb0.4Zr0.6, Fe37Nb9Zr54, w-Zr]]>
