Susceptibility for extrusion welding of AlMg alloys

Leśniak, D.; Wassermann, Alicja; Dziki, M.; Zaborowski, K.; Jurczak, H.

doi:10.1016/j.acme.2018.08.005

Cited by 9 publications

(2 citation statements)

References 7 publications

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“…Salah satu parameter proses pengelasan terhadap karakteristik hasil las ialah kondisi lingkungan. Kondisi lingkungan yang baik meliputi kelembaban udara, kecepatan angin dan suhu yang terkontrol dapat membuat hasil lasan yang maksimal [2]. Cacat yang sering terjadi pada pengelasan paduan aluminium adalah retak pembekuan, porositas dan distorsi [3].…”

Section: Pendahuluanunclassified

Effect of Air Humidity in MIG Welded Joints on Tensile Strength and Impact Strength of Aluminum 5052

Nduru,

Nugroho

2023

B. SAINSTEK

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In the shipbuilding process, delays often occur. In general, to speed up a ship's construction, overtime is carried out by workers until nighttime. Environmental conditions in a welding process, especially air humidity, strongly affect the properties of welded joints. The formation of hydrogen in the air caused by an inappropriate environment can cause defects in welded joints, especially porosity defects. Variations of welding environmental conditions used, are welding in the morning at 84% air humidity, daytime welding at 53% air humidity, and nighttime welding at 77% air humidity. This study aims to determine the material strength of air humidity variations during the welding process on the tensile strength and impact strength of 5052 aluminum material. This research uses experimental quantitative methods data analysis techniques used analysis of variance (ANOVA). The results showed that the higher the air humidity, the tensile and impact strength decreased. From the results of the tensile test, there is an influence of air humidity on the average value of tensile strength, where the highest value is found in the daytime welding variation specimen with 53% air humidity, worth 110.614 MPa. From the impact test results, there is an influence of air humidity on the average value of impact toughness, where the highest value is found in the daytime welding variation specimen with 53% air humidity, worth 89.42 J/mm2. From the ANOVA test results, the average tensile test and impact test have no significant differences.

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Section: Pendahuluanunclassified

Effect of Air Humidity in MIG Welded Joints on Tensile Strength and Impact Strength of Aluminum 5052

Nduru,

Nugroho

2023

B. SAINSTEK

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“…Alloys of magnesium (Mg) fall into the group that belongs to low dense, metallic characteristics, engineering materials and exhibit a variety of extensive and appealing properties such as exceptional electromagnetic shielding features, distinguished thermal conductivity, high degree of recyclability, greater specifc strength, easily cast-able, and larger specifc stifness [1][2][3]. Te presence of these qualities has enhanced the use of Mg alloys in a range of manufacturing sectors, especially aerospace, marine, automotive, railroads, and electronics.…”

Section: Introductionmentioning

confidence: 99%

Mechanical and Microstructural Investigation on AZ91B Mg Alloys with Tool Tilt Variation by Friction Stir Welding

Yaknesh

Tharwan

Rajasekaran

et al. 2022

Advances in Materials Science and Engineering

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By modifying the angle of tilt of 2 distinct tool pin shapes, both tapered with and without threaded structures, TPT tool pin with threads and TPNT tool pin with no threads, the mechanical behaviour and microstructural attributes were examined for the joints of AZ91B alloy formed by friction stir welding. Spindle torque and unique forces operating laterally and axially (referred to as Y-force and X-force, respectively) were created at the junction of the tool and plate, which were monitored and assessed in order to know the influence of degrees of tilt. When the tool’s angle of tilt advances, torque and forces of the spindle also show an increasing trend that is important to friction stir welding. The spindle torque and Y-force produced by the TPT tool are higher than those of the TPNT tool, whereas the X-force associated with the TPT tool is less. Discrepancies in forces grow along the concurrent increase in the angle of tilt for the TPNT as well as TPT tools, exhibiting opposite behaviour. The onion ring-type structure was visualized in the threaded tool pin structure TPT due to the high flow of plasticized metal compared to TPNT tool joints, for which the onion ring shape is not visible. With the TPT tool, the joint made at a 0° angle of tilt had a peak tensile strength of 232 MPa.

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