Nanotwin formation is observed during laser powder bed fusion (LPBF) of austenitic stainless steels fabricated with various process parameters. Transmission electron microscopy was employed to reveal the nature such twins, which are formed due high strain rapid solidification inherent LPBF. Dynamic recrystallization (DRX) also activated LPBF, and induced by deformation nanotwins. A thermostatis...

Recrystallization rate of ice crystals in 33% sucrose solutions, a model frozen dessert, was measured in the presence of antifreeze protein Type I (AFP type I) at -10°C, which is relevant to practical storage or distribution temperature of frozen dessert. The concentrations of AFP type I were set to 0.01, 0.1, and 1g/ml, respectively. Ice crystals during recrystallization process were observed...

Spinning extrusion forming (SEF) is a type of rheologic process for making complex structured aerospace components, such as ribbed cylindric shells. However, our understanding the texture evolution and recrystallization behavior during SEF still limited, especially in system like 2195 Al–Li alloy, which considered to be ideal material candidate vehicles because its low density high specific str...

in the present work the recrystallization behavior of deep drawing grade al-killed low carbon steel sheets produced by mobarakeh steel plant (msp) has been studied. salt bath isothermal annealing has been applied to cold rolled samples and the resulted microstrucrures have been compared with the microstructure obtained from the box annealing process in msp. it is found that at 635 and 700ºc the...

A new approach for measuring flow stresses near a spinning friction stir welding (FSW) tool is evaluated on AA 6061-T6 plate. The test consists of plunging cylindrical with flat face into the plate at different rotational speeds, using variety constant vertical loads. viscosity-based model shear layer created under employed to estimate local stresses. measured by this exhibited an inverse relat...

An Al-0.3%Cu alloy was deformed to high strains by cold rolling. The as-deformed samples were annealed at different temperatures until complete recrystallization. The cold rolling textures were determined by X-ray diffraction while the recrystallization textures and microstructures were characterized by electron backscatter diffraction. It was found that the rolling texture was characterized by...

Tough pitch copper wire (99.97% Cu) is generally characterized by the spiral elongation number. The principle of the test is based on the influence of impurities on the recrystallization kinetics. Alternative non-metallographic techniques to characterize the recrystallization kinetics have been investigated in this study, such as differential scanning calorimetry (D.S.C.) and residual electrica...

Abstract. In the aerospace industry, turbine disk plays a crucial role. Controlling average grain size during hot forming of nickel-based superalloys such as Inconel 718 is critical for production. Recrystallization primarily responsible evolution microstructure process. current study, Finite Element Method (FEM) employed to assess an incremental rolling FEM simulations are used obtain temperat...

The effects of prior stored energy level, annealing temperature, heating velocity, and initial grain size on annealing twin development during static recrystallization of commercially pure nickel (99.999 %) are investigated. The twin content (measured as the twin boundary density or as the number of twins per grain) at the end of recrystallization is shown to be primarily influenced by the prio...