properties and structure of the weld joints of
The research describes the effect of preheat temperature, interpass temperature, heat input, and post weld heat treatment on strength, hardness, toughness, and changes of microstructure in the weld joint. Welding with the lower heat input and without post weld heat treatment results in optimal mechanical properties in the weld metal.
The research work and related tests aimed to identify the effect of filler metal-free laser beam welding on the structure and properties of butt joints made of steel 700MC subjected to the TMCP Structure and Properties of Friction Stir Weld Joints of Apr 22, 2016 · The friction stir weld joints were characterized in respect of microstructure, hardness and tensile properties. The stir zone of the weld revealed the refined grain structure of ferrite, fine pearlite and martensite were also confirmed by XRD. Further, the hardness distribution of the weld joint exhibited higher hardness at the weld nugget than base metal and heat affected zone. The weld sample
1. In the structure of the joint of weld joints of 03Kh11N10M2T1 steel -ferrite partially transformed to -phase is observed. The quantity of -ferrite depends upon the chemical composition of the metal and the degree of dispersion of the weld joint dendrite structure, which in turn depends upon the welding PROPERTIES AND STRUCTURE OF THE WELD JOINTS OF ment on strength, hardness, toughness, and changes of microstructure in the weld joint. Welding with the lower heat input and without post weld heat treatment results in optimal mechanical properties in the weld metal. Aus-tempering at 400 °C results in optimal mechanical properties in the heat affected zone (HAZ). Increasing preheats