Dislocation Density News Today : Breaking News, Live Updates & Top Stories | Vimarsana

Stay updated with breaking news from Dislocation density. Get real-time updates on events, politics, business, and more. Visit us for reliable news and exclusive interviews.

Top News In Dislocation Density Today - Breaking & Trending Today

"Laser welding of FeCoCrNiMnAl x (x = 0, 0.75) high-entropy alloys fabr" by Mengdie Shan, Songyu Wang et al.

In the present study, the laser melting deposition (LMD) technology was adopted to fabricate FeCoCrNiMn and FeCoCrNiMnAl0.75 high entropy alloys (HEAs). Then, laser welding method was used to join the HEAs in forms of similar (FeCoCrNiMnAl/FeCoCrNiMnAl and FeCoCrNiMnAl0.75/FeCoCrNiMnAl0.75) and dissimilar (FeCoCrNiMnAl0/FeCoCrNiMnAl0.75) combinations, respectively. Ultra-depth field microscope and electron backscatter diffraction detection were used to observe the macro-morphology and microstructure, respectively. It was found that the width of the weld bead and heat-affected zone with higher aluminium content was larger. In both base metals and welded joints, aluminium promoted the face-centered cubic (FCC) phase transfer into body-centered cubic (BCC), significantly refined the grain and the dislocation density of HEA is also increased, which increased strength and hardness, and decreased ductility. Highlights The FeCoCrNiMn/FeCoCrNiMn, FeCoCrNiMn/FeCoCrNiMnAl0.75, FeCoCrNiMnAl0.75/F ....

Fecocrnimn Fecocrnimnal , Dislocation Density , Racture Behavior , High Entropy Alloy , Laser Melting Deposition , Laser Welding , Mechanical Properties , Eld Bead ,

"The influence of magnetic field on fatigue and mechanical properties o" by Qing Gu, Xiaxu Huang et al.

Abstract
The influence of a magnetic field of 1.2–1.3 T on the variation of the fatigue behaviors and the mechanical properties of a 35CrMo steel after fatigue tests are investigated in this paper, in order to provide a basic guidance on the application in the similar environment of electrical machinery or vehicles. The microstructures of samples tested with and without magnetic fields are observed and analyzed by XRD, SEM, and TEM techniques. The fatigue life cycles are slightly increased by about 10–15% under magnetic field of 1.2–1.3 T according to the experimental results. A small increment of yield strength under fatigue life cycles of 10,000, 50,000, and 100,000 times is caused by the magnetic field, although the enhancement is only of 5–8 MPa. The dislocation density of the specimen is increased and the uniformity of dislocations is improved by magnetic fields applied during fatigue tests under the same load and cycles. The formation of micro-defects or micro-cr ....

Dislocation Density , Magnetic Field , Mechanical Properties ,