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Journal : Quantum Teknika

Analisa Pengaruh Preheating dan Post Weld Quench terhadap Kekuatan dan Struktur Mikro Baja S45C dengan Pengelasan Shielded Metal Arc Welding Rachman, Arif; Dirja, Iman; Setiawan, Reza
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 6 No. 2 (2025): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v6i2.23046

Abstract

In many industrial contexts, steel is an everyday material. The technique of attaching metal parts using heat energy, known as welding, is something we encounter often; S45C is one of several steels that are used in machine construction. Protected metal arc welding is one type of welding that we come across frequently. Unwanted metallurgical changes, deformation, or residual stress in the base metal might occur as a consequence of uneven or excessive heating. A better method is to heat it up beforehand, often known as preheating, before welding. Determining the effect of preheating on the hardness of S45C steel during welding is one of the primary aims of this study. (2) to understand how changes in temperature and time affect the microstructure of S45C steel during welding and how it affects the final product. (3) ascertain the effect of temperature and duration on the resulting hardness of S45C steel welding. During the preheating procedure, the temperature is varied between 160 and 260 degrees Celsius, and the waiting periods are 7, 15, and 20 minutes, respectively. Hardness and microstructure testing, also known as metalografy, is performed on S45C steel after shielded metal arc welding (SMAW) to ascertain the degree of hardness and microstructure of the steel.
Analisis Variasi Waktu Perendaman Deep Cryogenic Treatment dan Aging terhadap Pengujian Kekerasan pada Aluminium 6061 Mahardika, Bimo Sakti; Naubnome, Viktor; Setiawan, Reza
Quantum Teknika : Jurnal Teknik Mesin Terapan Vol. 6 No. 2 (2025): April
Publisher : Universitas Muhammadiyah Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.18196/jqt.v6i2.23726

Abstract

Aluminum alloys are used more in industry due to its light weight, corrosion resistance, high strength, hardness, and recycling. This study examines the microstructure and hardness of 6061 aluminum alloy treated with Deep Cryogenic Treatment for 2, 12, 24, and 48 hours, followed by 1 hour of 1500C aging. Vickers hardness and microstructure testing will occur. The test results show that the hardness value has increased compared to the raw material. In the raw material variation, the hardness value is 53.4 HVN. The 2-hour immersion time variation experienced an increase in hardness value of 48.59% compared to the raw material. In the 12-hour soaking time variation, there was an increase of 43.9%. While the 24-hour and 48-hour variations also experienced an increase of 21.76% and 28.52% compared to the raw material. This is influenced by the microstructure that changes along with the variation in soaking time. Precipitates form due to the influence of deep cryogenic treatment which results in the hardness value of the 24-hour and 48-hour time variations decreasing compared to the 2-hour and 12-hour time variations.
Co-Authors Aa Santosa Abbari, Arif Dzaky Abdul Aziz Khalilurrahman Adha, Muhammad Dito Agustian Suseno Alfiansyah, Kevin Amanah, Nadia Andre Gusti Septiyansah Anjani, Ratna Dewi Apid Hapid Maksum Apriani, Wulan Ari Nuswantoro Arif Rachman Arinal, Veri Aripin Aripin Arum, Ardiansyah Astriyani, Erna Azafilmi Hakiim Baihaqi Alfakihuddin, Muhammad Lukman Baihaqi, Ahmad Bijaksana, Arif Bobie Suhendra Boni Sena Bramandhika Augustiantyo Budiman, Achmad Choirunnisa Choirunnisa Daniel Daniel Darmanto, Prihadi Setyo Deri Teguh Santoso Desi Wahyumarniasari Dessy Agustina Sari Destiany, Yulinda Devi Nurfitri Bintang Didiek Pudianto Mubarok Dinasti Aprillia Dirja, Iman Doharma, Rouli Elvandari, Milliyantri Enjang Ahmad Juanda Enjang Akhmad Juanda Fahrezi, Muhamnad Widdy Fajrin Koto Farradina Choria Suci Farradina Choria Suci Fatmawaty, A. St Fayyadho, M Thariq Qistan Firdaus, Muhammad Akmal Al František Hrdlička Gusniar, Iwan Nugraha Hakim, Rayhan Hanifi, Rizal Hansyah Faisal Pamekas Harisbaya, Ayu Intan hasyim, hasyim Hrdlička, František Ignatius Soni Kurniawan Ihsan Budiman Iman Dirja Irwansyah Irwansyah Iwan Nugraha Iwan Nugraha Gusniar Iyan Iyan Jajuk Herawati Jojo Sumarjo Jojo Sumarjo Kamilah Pathun Ni'mah Khotib, Ahmad Kusumaningarti, Miladiah Lawolo, Sihnta Gracea Lintang Ratri Prastika Listiyono Lukman Nulhakim Mahardika, Bimo Sakti Marchanda Rahmawati Martin Marno Marno Miftah Maulana Mochtar Zuliyana Mohammad Haikal Abdurraziq Muhamad Rizky Adipratama Muhammad Fahmi Hakim Muhammad Hifzil Alghiffari Muhammad Nur Yasin Nahadi Najmudin Fauji Nanang Burhan Nandang Hisbullah Naubnome, Viktor Nugraha, Iwan Gusniar Nugraha, Rapi Nurhasan Nurhasan Oleh . Oleh Oleh Oleh, Oleh Pamekas, Hansyah Faisal Pangestu, Luthfi Daffa Paramitha, Dinda Pertiwi, Suciani Rahma Prabowo, Reno Sandi Prihadi Setyo Darmanto Purnawan Purnawan Rahmanda Irawan, Rizky Rahmat Hidayat Rahmat Hidayat Ratih, Nur Rahmanti Richard Julianno Soeganda Rieval Ade Putra Rikky Rifaldy Rio Sandy Rivaldo Giri Saksono Rizal Hanifi Rizal Hanifi Rizki Achmad Darajatun Rizqillah Zaki Ahmadi Rohman, Ibnu Nur Rudy Handoko Rusman Rusman Safitra, Zuhe Saripudin, Mochamad Malik Abdullah Sena, Boni Setaji, Yogi Shinta Dwi Oktaviani Suciani Rahma Pertiwi Sugeng Riyadi Sugeng Riyadi Sugeng Riyadi Sugito Sugito Sukanta Supriyanto Supriyanto Surya Ma’rufi Fajar Sutinnarto Sutrisno Suwandi, Edy Tabayyun, Candan Tasya, Khalisa Aulia Tedi Nurjen Vallerina Lawrencia Tertaroza Vera Pangni Fahriani Wawan Wahyu WILLY RIANSAH Yogi Setaji Zetira, Cinthia Tasyva