dc.description.abstract | This study conducts experiments on aluminum alloy 6061 without adding other metal or materials during diffusion bonding process and defines the method as Genuine Diffusion Bonding. It is to analyze the testing result after diffusion bonding process between aluminum alloy 6061 and the base material, including tensile strength, hardness, elongation, reduction of area, etc. Through this experiment, we can find that the aluminum alloys that are not easy to diffuse can reach the same level of tensile strength as the base material. The control group is processed with T6 heat treatment. The tensile strength of the test piece and the base material increase simultaneously, also the test piece can maintain the same strength as the base material.
In the experiment of aluminum alloy 6061, two pieces (defined as T1 and T2 modules after pressing) and three pieces of materials (defined as S group modules after pressing) were carried out for diffusion bonding experiments. Among them, the size of the single substrate of two pieces of material for diffusion bonding is 120mm*100mm*20mm in length*width*thickness. Two different diffusion bonding conditions are used to press into T1 and T2 modules respectively, and respectively made into 30mm high I-shaped tension There are two groups of test pieces, one group has 4 pieces of I-shaped tensile test pieces, one group is made to do T6 heat treatment, and the other group is not. The size of the single substrate of the three pieces of material for diffusion bonding is 120mm*70mm*5mm in length*width*thickness, pressed into an S module, and made into a 33mm high I-shaped and a 70mm high Y-shaped shear test piece. Neither the I-shaped test piece nor the Y-shaped test piece is made of T6 heat treatment.
The experimental results show that the I-shaped test piece made of T1 module has outstanding performance, and the tensile strength ratio of the test piece and the base material can reach more than 98%. The average tensile strength before T6 heat treatment is 126MPa. After T6 heat treatment, it can raise to 305MPa。For the shear test piece made of the S module, the shear strength ratio of the I-shape to the base material is 79%, and the shear strength ratio of the Y-shape to the base material is 89%. From this experiment, it shows that the diffusion bonding strength of aluminum alloy 6061 can reach a level close to 100% of that of the base material. In the future industrial applications, we should study how to maintain the stability of its manufacturing process, so that it can be used more widely. | en_US |