Hmv 2t e

Hardness changes at the bonding position were investigated using the Vickers hardness tester (HMV-2T E, Shimadzu, Kyoto, Japan). For this purpose, a load of 50 g and a holding time of 10 s were used. Hardness changes in the bonding area, the interface, and the diffusion affected zone were measured. Due to the fact that bonding materials in the transient liquid-phase bonding method are a subset of the brazing processes, the shear strength test has been used to determine the bond strength. This test is performed according to the standard DASTM1002-05 with a strain rate of 1 mm/min. In order for the load to be applied precisely to the TLP-bonded sample, it is necessary to use a holder to convert the tensile stress into shear stress.
For this purpose, the TLP specimens with 10 × 10 × 10 mm³ dimensions were placed inside the special holder [25 (link)]. Then, the holding was placed in the jaws of the tension device, and the load was applied. This was performed using the Wolpert-FM2750 (Japan) device. The evaluation of shear strength on each series of samples was repeated three times. Figure 2 shows the schematic of experimental setup of the diffusion bonding processes of super-ferritic and martensitic stainless steel by BNi-2 amorphous foil.

A Vickers micro hardness tester (SHIMADZU, HMV-2TE, Kyoto, Japan) was used to test the micro hardness of composite materials, with a loading load of 980 mN and a loading time of 15 s. Metallographic microscope (Olympus, BX41RF, Tokyo, Japan) was used to take photos of hardness indentation. A slow diamond cutting machine (Kejing, SYJ-150, Shenyang, China) was used to cut a circular rod with a diameter of 2 mm into a cylindrical sample with a length of 4 mm for compression testing. A computer-controlled electro-hydraulic servo universal testing machine (Guanteng, PA200, Changchun, China) was used to test the compressive mechanical properties of the MGMC and BMG samples with a strain rate of 0.5 mm/min. To ensure the reliability of the data, each sample was tested at least 3 times, and the mechanical property was taken from the average value of the samples. The density of different as cast samples was tested based on the Archimedes drainage method, and the specific strength was evaluated by dividing the yield strength obtained from the compression experiment by the density.