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All Journal Journal of Metallurgical Engineering and Processing Technology Creative Research in Engineering (CERIE)
Mansyur Abdul Shaleh
Program Studi Teknik Metalurgi, Fakultas Teknologi Mineral, Universitas Pembangunan Nasional “Veteran” Yogyakarta
Chemical Engineering, Chemistry & Bioengineering Control & Systems Engineering Energy Engineering Environmental Science Materials Science & Nanotechnology Mechanical Engineering

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PENGARUH VARIASI METAL TRANSFER TERHADAP KARAKTERISTIK SAMBUNGAN LAS PADA PROSES PENGELASAN GMAW DENGAN PELINDUNG GAS ARGON Mansyur Abdul Shaleh; Wijoyo Wijoyo; Rohmadi Rohmadi
Journal of Metallurgical Engineering and Processing Technology Vol 3, No 2 (February 2023)
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v3i2.8764

Abstract

This study aims to determine the variation of metal transfer on tensile strength, impact, hardness distribution, macrostructure, microstructure and chemical composition of low carbon steel metal by GMAW welding method. The material used in this study was AISI 1018 low carbon steel. The material was welded using the GMAW method. Variation of globular arc, spray arc and short arc welding. The tests carried out included tensile testing, impact testing, hardness testing, macro-structural observations, micro-structural observations and chemical composition. The test phase to determine tensile strength refers to ASTM E8/E8M-09 with specimen dimensions of 100 mm long, 10 mm wide and 5 mm thick, while for impact testing refers to ASTM E23-07a with dimensions of 55 mm long, 10 mm wide and 10 mm thick. 10 mm with a notch depth of 5 mm and photographic observations of macro, micro and chemical composition. The test results show that the maximum tensile strength with the globular arc welding method is 526.3 MPa and the yield stress is 377.3 MPa, which is greater than that of the low carbon steel parent metal, which is 454 MPa. The impact toughness value of the globular arc welding method is 3.58 J/mm2. Results The microstructure of the weld metal undergoes structural changes in all welding methods. The test results for the chemical composition of the Fe content in low carbon steel materials by welding were 98.78% to 97.76%.
Analisis Pengaruh Ukuran Serbuk Kromium Karbida terhadap Hasil Morfologi Lapisan High Velocity Oxygen Fuel (HVOF) Thermal Spray Coating Hendy Roesma Wardhana; Budi Prawara; Mansyur Abdul Shaleh
Journal of Metallurgical Engineering and Processing Technology Vol 2, No 3 (July 2022) Special Edition
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v2i3.9371

Abstract

High Velocity Oxygen Fuel (HVOF) thermal spray merupakan metode coating yang banyak digunakan karena memiliki berbagai keunggulan. Namun demikian, prosedur coating yang dilakukan dengan waktu singkat, kecepatan tembak yang tinggi, dan juga berkisar pada temperatur tinggi dapat menjadi permasalahan proses pengerjaan yang menyebabkan kecacatan hasil coating. Beberapa kajian sebelumnya, sudah membahas mengenai pengaruh kecepatan tembak terhadap profil lapisan. Pada penelitian ini, ukuran serbuk feedstock 45 µm dan 37 µm digunakan untuk mengetahui perbedaan hasil lapisan yang terbentuk. Proses penyemprotan dilakukan dengan standar penelitian sebelumnya dan diatur sesuai dengan kapasitas mesin HVOF thermal spray. Pembahasan mengenai profil lapisan dibantu dengan alat mikroskop optik untuk mengetahui morfologi tingkat mikro. Pembahasan ketebalan lapisan, porositas, dan kekasaran permukaan lapisan dibahas secara komprehensif dengan memperhatikan pembahasan penelitian sebelumnya. Penelitian ini bermanfaat sebagai dasar pengetahuan mengenai pengaruh ukuran serbuk terhadap profil lapisan coating pada metode HVOF thermal spray.
ANALISIS FORMING LIMIT DIAGRAM (FLD) PADA MATERIAL TEMBAGA Mansyur Abdul Shaleh; Atik Setyani
Journal of Metallurgical Engineering and Processing Technology Vol 2, No 3 (July 2022) Special Edition
Publisher : UPN "Veteran" Yogyakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.31315/jmept.v2i3.9372

Abstract

Forming Limit Diagram also known as forming limit curve, is used in sheet metal forming to predict sheet metal forming behavior. The diagram contains a graphical description of a material failure test, such as the hollow dome test. This study aims to make a Forming Limit Diagram (FLD) of copper material with a thickness of 0.5 mm through the Nakazima standard FLD test using the experimental method research process. FLD test results are strengthened by tensile testing using the ASTM E8 standard with a cutting angle at 00 450, and 900 against the plate rolling direction. The results of the FLD test analysis on copper with a thickness of 0.5 mm show that the specimen has a maximum major strain value of 17.96% and a maximum minor strain of 7.05% while for tensile strength a cutting angle of 450 has the greatest maximum stress of 124,414 MPa, and experienced the greatest strain of 28.8%. specimen 00 true stress was 85.934 MPa, true strain was 14.5 %, and specimen 900 was true stress was 116.138 MPa, true strain was 25.4 %.
Pengaruh Heat Treatment terhadap Mikrostruktur dan Kekerasan pada Material Low Carbon Stell ST-37 Atik Setyani; Hendy Roesma Wardhana; Mansyur Abdul Shaleh; Stephanus Yoshi Kristanta; Firmansyah Ismudian Syahidin; Nixon Carlotta
Creative Research in Engineering (CERIE) Vol 4, No 2 (2024): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30595/cerie.v4i2.19590

Abstract

Material low carbon steel ST-37 menjadi salah satu material yang prospektif untuk dikembangkan dalam berbagai aplikasi perkapalan diantarannya lambung kapal. Namun disisi lain diperlukan treatment guna meningkatkan ketangguhan serta kekuatannya yang sampai saat ini menjadi salah satu tantangan dalam fabrikasi material kapal. Oleh karena itu, pada penelitian ini telah dilakukan pengkajian tentang perlakuan panas pada material ST-37. Material low carbon steel ST-37 dihomogenisasi pada temperatur 800 ℃ selama 1 jam diikuti dengan pendinginan udara. Selanjutnya material diaustenisasi pada temperatur 850 ℃ dan 870 ℃ selama 15 menit kemudian di lakukan pendinginan cepat menggunakan media air. Sampel dikarakterisasi menggunakan XRD untuk mengidentifikasi fasa, pengujian metalografi dan uji kekerasan menggunakan microvickers. Hasil pengujian mikrsotruktur menunjukkan bahwa setelah perlakuan panas terjadi pembentukan fasa ferit acicular, retained asutenit dan pengecilan ukuran butir. Analisa struktur mikro dilakukan dengan proses metalografi menggunakan esta NaOH.  Selain itu identifikasi fasa juga terkonfirmasi melalui pengujian XRD yang diketahui terdapat puncak dengan hkl fasa ferit α (111), α (200) dan α (220). Sedangkan fasa reatined austenit terkonfirmasi pada hkl γ (220). Hasil pengujian microvicekrs menunjukkan peningkatan kekerasan pada sampel yang telah diberikan perlakuan panas dari 129.53 HVN menjadi 308.2 HVN pada sampel 850 ℃ dan 312.5 HVN pada sampel 870 ℃ . Peningkatan kekerasan pada sampel terjadi melalui mekanisme penguatan batas butir dan presipitasi.
Pengaruh Preheating Terhadap Kekuatan Tarik Dan Struktur Mikro Sambungan Las Pada Baja S355J2 Mansyur Abdul Shaleh
Creative Research in Engineering (CERIE) Vol. 6 No. 2 (2026): Creative Research in Engineering (CERIE)
Publisher : Lembaga Publikasi Ilmiah dan Penerbitan (LPIP)

Show Abstract | Download Original | Original Source | Check in Google Scholar

Abstract

S355J2 steel is widely used for load-bearing components in structures exposed to dynamic loads and low temperatures. It has high tensile strength and excellent weldability, making it ideal for railway underframe construction. Achieving optimal mechanical properties requires preheating as part of the welding process. This study investigates the effect of preheating on the tensile strength and microstructure of welded joints in S355J2 steel. Specimens were prepared using S355J2 steel plates with three preheating variations: no preheating, 65°C, and 137°C. Results showed that the highest tensile strength (581.5 MPa) was achieved with 65°C preheating, while the lowest (529.6 MPa) was observed without preheating. The specimen preheated at 137°C had a tensile strength of 549.5 MPa. Microstructural analysis revealed that non-preheated material consisted of pearlite and ferrite phases. Preheating at 65°C resulted in Grain Boundary Ferrite with more uniform, elongated grains, enhancing material strength. However, at 137°C, tensile strength decreased due to larger grain sizes and a structure approaching Grain Boundary Ferrite.
Co-Authors Budi Prawara Firmansyah Ismudian Syahidin Hendy Roesma Wardhana Nixon Carlotta Rohmadi Rohmadi Setyani, Atik Stephanus Yoshi Kristanta Wijoyo Wijoyo