波状曲げプレス加工を施したAMCa602およびAZ31Bマグネシウム合金の集合組織 Textures in AMCa602 and AZ31B magnesium alloys formed by wavy bend pressing
A new technique for improving mechanical properties in magnesium alloys was developed by the authors, in which specimens are repeatedly hot-pressed using wavy surface dies with in-plane rotating. A solid lubricant, h-BN, has been used and the size of the waves has been changed. Specimens of AMCa602 and AZ31B magnesium alloys were hot-pressed at 623 K for eight times with rotating at 45 degree after each pressing. The treated specimens showed that intensities in accumulation of basal plane in pole figures were decreased and the orientation of accumulation was diffusely scattered, compared with those obtained on solution heat treated specimens. And also, an anisotropy in mechanical properties disappeared to show low yield stress and high work hardening rate.
軽金属 57(3), 99-104, 2007-03-30
The Japan Institute of Light Metals