Desain Paduan Logam Untuk Komponen Turbin Pembangkit Listrik

Authors

Efendi
Indonesian Institute of Sciences

Keywords:

paduan super berbasis nikel, baja tahan karat, sudu turbin

Synopsis

Dalam pengembangan paduan logam untuk sudu turbin gas, penulis telah mendesain komposisi kimia dan struktur mikro paduan-super berbasis nikel kristal tunggal generasi baru berdasarkan interaksi unsur-unsur paduan pada suhu tinggi. Paduan-super generasi baru ini dicirikan oleh kandungan unsur refraktori yang tinggi untuk meningkatkan kekuatan creep dan kandungan unsur yang menekan presipitasi fasa yang merusak pada suhu tinggi. Interaksi unsur-unsur paduan pada suhu tinggi dievaluasi dengan menganalisis data interdifusi di dalam paduan nikel yang diperoleh secara eksperimen. Berkaitan dengan paduan logam untuk sudu turbin uap, penulis melakukan desain baja tahan karat martensitik dan baja tahan karat austenitik, baik dari sisi komposisi kimia maupun perlakuan panasnya. Desain menghasilkan baja tahan karat martensitik dengan komposisi modifikasi yang memiliki kekuatan mekanik, ketahanan abrasi, dan ketahanan korosi sumuran yang lebih baik dari baja tahan karat martensitik standar 410. Selain itu, dihasilkan juga komposisi baja tahan karat austenitik Fe-25Ni-15Cr modifikasi yang memiliki kekerasan dan ketahanan korosi sumuran yang lebih baik dari baja tahan karat austenitik Fe-25Ni-15Cr standar. Buku orasi ini menyajikan permasalahan yang terjadi pada turbin gas dan turbin uap, perkembangan dan desain paduan-super berbasis nikel untuk aplikasi sudu turbin gas, serta perkembangan dan desain baja tahan karat untuk aplikasi sudu turbin uap. Hilirisasi hasil desain paduan-paduan ini untuk turbin pembangkit listrik tenaga gas (PLTG) dan tenaga uap (PLTU) di Indonesia juga disajikan dalam buku orasi ini.

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July 24, 2021

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