Efek Parameter Laku Panas Terhadap Sifat Mekanis Baja Paduan Rendah Kekuatan Tinggi

Adhitya Trenggono, Alfirano Alfirano

Abstract


Baja paduan rendah kekuatan tinggi (High Strength Low Alloy Steel) telah banyak dipergunakan untuk berbagai aplikasi antara lain: konstruksi, pipa saluran minyak dan gas, bejana bertekanan dan otomotif. Pada saat proses pabrikasi, material ini seringkali megalami proses laku panas yang dapat mengakibatkan perubahan sifat mekanik. Penelitian ini dilakukan untuk mempelajari pengaruh proses laku panas normalisasi terhadap sifat mekanik baja paduan rendah kekuatan tinggi dengan mengamati perilaku efek mekanisme penguatan baja antara lain, penguatan besar butir, penguatan larutan padat, penguatan presipitat dan penguatan dislokasi. Hasil pengujian menunjukkan bahwa kenaikan temperatur dan penambahan waktu tahan pada proses normalisasi mengakibatkan penurunan kuat tarik. Pemeriksaan metalografi menunjukkan adanya pertambahan ukuran buti ferit untuk kondisi tersebut.


Keywords


Baja HSLA; Perlakuan Panas; Temperatur; Waktu Tahan; Kuat Tarik; Kekerasan;

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References


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DOI: http://dx.doi.org/10.36055/tjst.v12i1.6615

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