Role of particle stimulated nucleation in recrystallization of hot extruded Al 6061/SiC_p composites

作     者：C.S.RAMESH R.KESHAVAMURTHY Praveennath G.KOPPAD K.T.KASHYAP C.S.RAMESH;R.KESHAVAMURTHY;Praveennath G.KOPPAD;K.T.KASHYAP

作者机构：Department of Mechanical EngineeringPES Institute of TechnologyBangalore 560085India Visiting ProfessorSchool of DesignEngineering and ComputingBournemouth UniversityUnited Kingdom Central Manufacturing Technology InstituteTumkur RoadBangalore 560022India 

出 版 物：《Transactions of Nonferrous Metals Society of China》 (中国有色金属学报（英文版）)

年 卷 期：2013年第23卷第1期

页      面：53-58页

核心收录：

学科分类：08[工学] 0805[工学-材料科学与工程（可授工学、理学学位）] 080502[工学-材料学] 

基　　金：granting financial assistance to carry out this work which is a part of research project No.SR/S3/ME/019/2004-SERC 

主　　题：metal matrix composites 6061/SiC p composite extrusion particle stimulated nucleation recrystallization stored energy 

摘      要：Studies on texture and microstructure evolution in hot extruded Al 6061 aluminium alloy reinforced with uncoated and nickel coated SiC p were carried out by electron backscattered diffraction *** of both the alloy and its composite with nickel coated SiC p do exhibit strong β fiber with its axis parallel to the direction of *** addition to the dominant cube texture（001） 100,fully recrystallized grains with partially equiaxed structure have been observed in the alloy reinforced with uncoated SiC *** recrystallization texture of this composite can be attributed to the particle stimulated nucleation（PSN） due to the presence of SiC p with size less than 5 μ*** these conditions,the low value of Zener-Hollomon,Z（～1012s-1） confirms that PSN is one of the dominant mechanisms for recrystallization and is governed by formation of deformation zone rather than stored energy.