Effect of squeezing and annealing on the structure and properties of Fe-Ga-Al-Dy alloy
The as cast(Fe81Ga15.8Al3.2)100-xDyx(x=0-0.6)alloy was prepared using a non consumable vacuum arc furnace,and the ingots were subjected to extrusion annealing treatment using a forging machine.By observing the microstructure,analyzing the phase structure,measuring the magnetostrictive properties and hardness,the effect of extrusion annealing process on the phase structure and magnetostrictive properties of the alloy was studied.The results indicate that compared with the as cast alloy,the phase structure of the extruded annealing treated alloy changes from A2 phase to A2 and D03 composite phase structure.Meanwhile,the magnetostrictive properties of the alloy treated with extrusion annealing decreased.When x=0.5,the magnetostrictive performance of the alloy changes most significantly,decreasing by 57.1%.This is because the extrusion annealing treatment enhances the<211>orientation of the alloy,thereby reducing the magnetostrictive properties of the alloy.When x=0.1,the rockwell hardness value of the alloy is the highest,and after extrusion annealing,the hardness value of the alloy increases from 30.1 HRC to 38.3 HRC.
NETL
NSTL
万方数据
