Mechanical Properties of Friction Stir Welded AA1050-H14 and AA5083-H111 Joint: Sampling Aspect

Abstract

Welding of dissimilar aluminium alloys has been a challenge for a long period until the discovery of the solid-state welding technique called friction stir welding (FSW). The discovery of this technique encouraged different research interests revolving around the optimization of this technique. This involves the welding parameters optimization and this optimization is categorized into two classes, i.e., similar alloys and dissimilar alloys. This paper reports about the mechanical properties of the friction stir welded dissimilar AA1050-H14 and AA5083-H111 joint. The main focus is to compare the mechanical properties of specimens extracted from different locations of the welds, i.e., the beginning, middle, and the end of the weld. The specimen extracted at the beginning of the weld showed low tensile properties compared to specimens extracted from different locations of the weld. There was no certain trend noted through the bending results. All three specimens showed dimpled fracture, which is the characterization of the ductile fracture.

Microstructure and Mechanical Properties of Dissimilar Friction Stir Welded Joint AA7020/AA5083 with Different Joining Parameters

“…Joining dissimilar materials is challenging but essential for many applications as the advantages of different materials can be well exerted. Friction stir welding (FSW) enables joining dissimilar materials, including not heat-treated 5xxx with hard-to-weld 7xxx aluminum alloys [ 3 , 4 , 5 , 6 , 7 ]. For FSW, two parameters are critical: tool rotation speed (ω, rpm) and tool traverse speed (v, mm/min) along the joint line [ 8 , 9 , 10 ].…”

Modification of Surface and Subsurface Properties of AA1050 Alloy by Shot Peening

“…Commercially pure Al, including AA1050 Al alloy, has been widely used in various applications such as household items [11], food containers [3], chemical plant equipment [3], light reflectors [3,14], rivets [15], heat exchangers [14], and electrical wiring applications [16].…”

“…Materials 2021, 14, 6575 2 of 18 They exhibit high corrosion resistance [17,18] and high thermal and electrical conductivity [2,5,18]. The mechanical properties of commercially pure Al alloy (e.g., AA1050-H14 [3]) can be listed as follows: σ u of 78-107 MPa [8,14,19], σ y of 74-128 MPa [8,19], elastic modulus of 68-71 GPa [3,19], and hardness of 25-30 HV [8,20]. These mechanical properties are relatively poor compared to their alloyed counterparts (e.g., AA2020-T4 [21], AA2024 [22], 5056 Al alloy [23], AA7075 [24,25]) and thus restrict their usage in applications with moderate stress, indentation, and friction [10,14,18].…”

“…The mechanical properties of commercially pure Al alloy (e.g., AA1050-H14 [3]) can be listed as follows: σ u of 78-107 MPa [8,14,19], σ y of 74-128 MPa [8,19], elastic modulus of 68-71 GPa [3,19], and hardness of 25-30 HV [8,20]. These mechanical properties are relatively poor compared to their alloyed counterparts (e.g., AA2020-T4 [21], AA2024 [22], 5056 Al alloy [23], AA7075 [24,25]) and thus restrict their usage in applications with moderate stress, indentation, and friction [10,14,18]. Consequently, there has been a growing interest in improving the mechanical properties (particularly hardness) of pure Al alloy with an acceptable compromise in other physicochemical properties [2,26] by using different strategies such as SPD methods [5,17,20,26] and incorporation of nanoparticles into pure Al [8,10].…”

“…SP is a well-known mechanical surface treatment method to improve the fatigue life of materials used in various engineering applications (e.g., automotive, aerospace, and biomedical applications) [1,24,25,[35][36][37][38][39][40]. More specifically, it is an enticing process for enhancing mechanical properties (i.e., hardness, roughness, residual stress, σ y [1,6,22,23,[41][42][43]), corrosion resistance [34,35,42,44,45], electrical conductivity [14], wear resistance [24], and biological properties [6,46,47] of engineering alloys. Briefly, SP modifies the surface and subsurface features of materials through plastic deformation caused by the bombardment of small steel shots onto a surface [22,24,40,42,[46][47][48][49], improving the fatigue life by inhibiting micro-crack formation and propagation [1,23,[36][37][38][39][50][51][52].…”