PENGARUH FREKUENSI PULSE PENGELASAN GTAW PADA ALUMINIUM ALLOY 6061

Ari Wibowo; Nugroho Pratomo Aryanto; Cahyo Budi Nugroho; Muhammad Ismail

doi:10.30871/ji.v11i2.1002

Penulis

Ari Wibowo
Nugroho Pratomo Aryanto
Cahyo Budi Nugroho
Muhammad Ismail

DOI:

https://doi.org/10.30871/ji.v11i2.1002

Kata Kunci:

pulse frequency, AA6061, GTAW, porositas, struktur makro, microhardness

Abstrak

Paper ini menggambarkan pengaruh pulse frequency terhadap sifat microhardness, porosity dan makrostructure pada pengelasan GTAW. Penelitian ini menggunakan aluminium 6061 sebagai base metal dan tanpa menggunakan filler metal. Pulse frequency divariasikan dari 0 Hz sampai 10 Hz. Hasil makrostruktur menunjukkan bahwa kedalaman penetrasi maksimum terjadi pada pulse frequency 6 Hz, sedangkan lebar penetrasi lasan maksimum terjadi saat tidak menggunakan pulse frequency. Pengujian kekerasan mikro menunjukkan bahwa terjadinya kekerasan maksimum pada pulse frequency 6 Hz sedangkan kekerasan paling rendah terjadi pada pulse frequency 10 Hz. Pengelasan AA 6061 tanpa filler ini menghasilkan porositas yang bisa berdampak pada kekerasan pada weld metal.

Unduhan

Data unduhan belum tersedia.

Referensi

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