화학공학소재연구정보센터
Materials Science Forum, Vol.419-4, 201-206, 2003
Mechanical properties and texture evolution in ECAP processed AZ61 mg alloys
X-ray diffraction results of the present study show that texture modification occurs during ECAP. The original fiber texture of extruded AZ61 alloy was disintegrated and a new texture was developed gradually by repetitive ECAP pressing. The maximum texture intensity decreased as the pass number increased from 0 up to 2 passes and then increased as the new ECAP texture developed with increasing number of passes. The dominant texture after 8 passes was(10 (1) over bar1)[0 (1) over bar 11] + (10 (1) over bar2)[(1) over bar2 (1) over bar0]. In the eight-passed alloy, the yield stress decreased appreciably compared with that of as-extruded AZ61 alloy, suggesting the texture softening is dominant over the strengthening due to grain refinement.