Effects of CeF3 on properties of self-shielded flux cored wire including welding process, inclusions in weld metal and mechanical properties are systematically studied. Welding smoke and spatter are reduced with the a...Effects of CeF3 on properties of self-shielded flux cored wire including welding process, inclusions in weld metal and mechanical properties are systematically studied. Welding smoke and spatter are reduced with the addition of CeF3. The main non-metallic inclusions in weld metal are AlN and Al2O3. CeF3 can refine non-metallic inclusions and reduce the amount of large size inclusions, which is attributed to the inclusion floating behavior during the solidification of weld metal. The low temperature impact toughness is improved by adding suitable amount of CeF3 in the flux.展开更多
The effect of strain rate on the bend ductility and notch fracture toughness of Ti-24Al-11 Nb was studied,it was found that the strain rate with a range of 1.17×10^(-5)～1.17 ×10^(-3) at 20℃ had nega- tive ...The effect of strain rate on the bend ductility and notch fracture toughness of Ti-24Al-11 Nb was studied,it was found that the strain rate with a range of 1.17×10^(-5)～1.17 ×10^(-3) at 20℃ had nega- tive influence on both properties based on different microstructures.展开更多
文摘Effects of CeF3 on properties of self-shielded flux cored wire including welding process, inclusions in weld metal and mechanical properties are systematically studied. Welding smoke and spatter are reduced with the addition of CeF3. The main non-metallic inclusions in weld metal are AlN and Al2O3. CeF3 can refine non-metallic inclusions and reduce the amount of large size inclusions, which is attributed to the inclusion floating behavior during the solidification of weld metal. The low temperature impact toughness is improved by adding suitable amount of CeF3 in the flux.
文摘The effect of strain rate on the bend ductility and notch fracture toughness of Ti-24Al-11 Nb was studied,it was found that the strain rate with a range of 1.17×10^(-5)～1.17 ×10^(-3) at 20℃ had nega- tive influence on both properties based on different microstructures.
