With advanced resolutions reaching sub-angstrom levels, electron microscopy provides direct visualizations of catalyst particles, support structures, and pores that complement spectroscopic and diffraction methods. When integrated with elemental analysis techniques, a comprehensive picture of catalytic systems can be built up from the microscopic level.
The microstructure and properties of non-linear friction stir welded lap joints of the AA6061-T6 aluminum alloy were investigated, with a particular focus on the influence of corner curvature on the formability and mechanical properties of the joints. The research results indicate that for the 6061-T6 aluminum alloy lap joint friction stir welding with a smaller radius (R < 7 mm), there is a more severe accumulation of welding material. When the radius exceeds 7 mm, good macroscopic joint formation can be achieved. Various regions at the joint corners are composed of α-Al and intermetallic precipitations β phases. The microstructure of the heat-affected zone (HAZ) appeared relatively coarse, the weld nugget zone (WNZ) had the finest grain, and partial dissolution of the β phase occurred. The grain size in the middle WNZ at the corner was larger than at the ends, and the grain size on the inner side of the corner was larger than on the outer side. The hardness distribution of the
Mechanical Properties of Fluids Formulas, Definitions & Diagrams: Get here important formulas and definitions for CBSE Class 11 Physics Chapter Mechanical Properties of Fluids.
Mechanical Properties of Solids Formulas, Definitions & Diagrams: Get here important formulas and definitions for CBSE Class 11 Physics Chapter Mechanical Properties of Solids.