EFEK POST WELDING HEAT TREATMENT PADA SIFAT MEKANIK DAN FISIK PADA SAMBUNGAN SS 304 DAN BAJA KARBON AISI 1037

GHAZALI, RADEN DUSTIN and Arifin, Amir (2023) EFEK POST WELDING HEAT TREATMENT PADA SIFAT MEKANIK DAN FISIK PADA SAMBUNGAN SS 304 DAN BAJA KARBON AISI 1037. Undergraduate thesis, Sriwijaya University.

	Text RAMA_21201_03051281924066.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (7MB) | Request a copy
	Text RAMA_21201_03051281924066_TURNITIN.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (5MB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_01_front_ref.pdf - Accepted Version Available under License Creative Commons Public Domain Dedication. Download (1MB)
	Text RAMA_21201_03051281924066_0024097806_02.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (841kB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_03.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (737kB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_04.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (3MB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_05.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (411kB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_06_ref.pdf - Bibliography Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (378kB) | Request a copy
	Text RAMA_21201_03051281924066_0024097806_07_lamp.pdf - Accepted Version Restricted to Repository staff only Available under License Creative Commons Public Domain Dedication. Download (2MB) | Request a copy

Abstract

The study focuses on advancing dissimilar metal welding techniques. The intense heat during welding leads to thermal expansion or contraction of the metal upon cooling, resulting in residual stresses in the weld area. Post Weld Heat Treatment (PWHT) is employed to alleviate these residual stresses. The research investigates the impact of PWHT on the mechanical and physical properties of joints between AISI 304 austenitic stainless steel and AISI 1037 carbon steel. Shielded Metal Arc Welding (SMAW) is the chosen welding process, with PWHT carried out using a Ceramic Heating Pad (CHP) at temperatures of 600°C, 650°C, and 700°C, held for 2 hours, followed by gradual cooling. A battery of tests, including tensile, Vickers hardness, composition, metallographic, X-ray Diffraction, SEM, and EDS line analysis, was conducted. The results highlight that sensitization at 700°C adversely affects tensile strength and hardness. Tensile strength remains consistent without PWHT and with PWHT at 600°C and 650°C, but significantly drops at 700°C. Hardness generally decreases with higher PWHT temperatures, except at 700°C where it rises. The microstructure of AISI 1037 carbon steel shifts towards more ferrite with increasing PWHT temperature, though this trend reverses at 700°C. SEM and EDS analyses reveal the presence of Cr carbides at grain boundaries, formed through rapid carbon atom diffusion and Cr combination.

Item Type:	Thesis (Undergraduate)
Uncontrolled Keywords:	pengelasan tak sejenis, PWHT, sensitisasi
Subjects:	T Technology > TJ Mechanical engineering and machinery > TJ1-1570 Mechanical engineering and machinery
Divisions:	03-Faculty of Engineering > 21201-Mechanical Engineering (S1)
Depositing User:	Raden Dustin Ghazali
Date Deposited:	21 Nov 2023 03:28
Last Modified:	21 Nov 2023 03:28
URI:	http://repository.unsri.ac.id/id/eprint/130777

Actions (login required)

View Item