摘要
采用搅拌摩擦加工技术(Friction stir processing,FSP)对AZ31镁合金板材进行了单道次加工,研究了加工区域微观组织对力学性能的影响。结果表明,相同前进速度下,旋转速度升高,平均晶粒尺寸增大。搅拌摩擦加工后,晶粒尺寸和织构变化显著影响AZ31镁合金的力学性能,平均晶粒尺寸越大,越易发生孪生变形。织构类型主要包括基面织构和纤维织构。基面织构位于软位向时,屈服强度降低,但纤维织构会弱化基面织构对力学性能的影响。
AZ31 magnesium alloy plates were fabricated by friction stir processing(FSP),and the microstructure and mecha-nical properties of the processed region were studied.The results showed that the average grain size increased as a result of increasing rotation speed under the same travelling speed.After FSP,grain size and texture affect the mechanical properties of AZ31 magnesium alloy significantly,the twin deformation would be more likely to occur with greater average grain size.Texture type mainly included basal plane texture and fiber texture,while the yield strength was lower when basal plane texture was in the soft orientation,but fiber texture would weaken the influence of basal plane texture of mechanical properties.
作者
俞良良
张郑
王快社
王文
贾少伟
YU Liangliang;ZHANG Zheng;WANG Kuaishe;WANG Wen;JIA Shaowei(College of Metallurgy Engineering,Xi’an University of Architecture and Technology,Xi’an 710055;National and Local Joint Engineering Research Center of Function Material Processing,Xi’an University of Architecture and Technology,Xi’an 710055)
出处
《材料导报》
EI
CAS
CSCD
北大核心
2018年第8期1289-1293,共5页
Materials Reports
基金
国家自然科学基金(51574192
51274161
U1360105
51404180)
关键词
搅拌摩擦加工
AZ31镁合金
力学性能
晶粒尺寸
织构
friction stir processing
AZ31 magnesium alloy
mechanical properties
grain size
texture component
