6061鋁合金在時效期間加工特性之研析

• Main Authors: Chun-Hsiung Kuo, 郭俊雄
• Other Authors: 熊樂群
• Format: Others
• Language: zh-TW
• Published: 2005
• Online Access: http://ndltd.ncl.edu.tw/handle/52047225145412973567

碩士 === 國防大學中正理工學院 === 兵器系統工程研究所 === 93 === The effects of aging heat treatment on the mechanical properties of the 6061 aluminum alloys were investigated. Within 460~580℃, the solution treatment and aged at different temperature has a profound effect on the mechanical properties. Both strength and hardeness of alloys increase with increasing temperature of solution treatment at within 160~190℃ treatment the hightest strengths and hardness are obtained at the low temperature aging. The Portevin-Le Chatelier Effect （PLC effect）of this alloy system was also conducted by using Materials Testing system（MTS 810）. There are three types of defomation modes in PLC effect, i.e, Type A、B and C. Type A serration occurs at highest strain rate（ε＞1×10-3 s-1）, Type B serration occurs at middle strain rate（1×10-3 s-1＞ε ＞1×10-4 s-1）, Type C serration occurs at lowest strain rate（ε＜1×10-4 s-1）. The Bauschger effece of this material suggested that the compressive strength were always lower than the tensile strength.