A new solidification cracking test: stationary weld-pool deformation test

Abstract

Various tests have been proposed to assess solidification cracking susceptibility. A new solidification cracking test, called the stationary weld pool deformation test, is introduced in the present study. The test employs a stationary weld pool during testing, and it is conducted by joining two square small workpiece with spot gas tungsten arc welding and moving one piece away from the other one to cause cracking. The test has been applied on aluminium alloys 2024, 5083, 6061 and 7075, and the susceptibility of them was found consistent with literature. The fracture surface of some of these aluminium alloys were examined, and typical characteristics of solidification cracks were seen. Advantages and disadvantages of the test method were discussed.

Antireflection Property and Corrosion Resistance of Black Ceramic Superhydrophobic Coatings on Aluminum Alloy

“…[ 1–3 ] The advantages of Al alloy include high specific strength, high specific stiffness, certain corrosion resistance, excellent mechanical properties, and processability. [ 4–6 ] Al alloy is also one of the most abundant and remarkable metals, making it very important for future applications. [ 7–10 ] However, Al alloy has some disadvantages.…”

Efecto de la soldadura por fricción rotativa sobre las propiedades mecánicas de la aleación Al 6060

“…However, the high heat input can cause a decline in the mechanical strength of these alloys when they are joined with fusion welding processes (Kou, 2020). In addition, Al alloys are sensitive to hot cracking when fusion welding is used (Soysal, 2020;Soysal, 2021) due to the solidification shrinkage (liquid density > solid density) and the thermal contractions. Thus, usually a proper filler alloy is needed to change the chemical content of the weld to avoid the cracking issue (Coniglio and Cross, 2009;Soysal and Kou, 2019).…”