TiB_(w)/TA15复合材料板材组织及力学性能研究  

Microstructure and Mechanical Properties of TiB_(w)/TA15 Composite Sheet

作　　者：王富鑫 付明杰 钱健行 曾元松 韩秀全 WANG Fuxin;FU Mingjie;QIAN Jianhang;ZENG Yuansong;HAN Xiuquan(AVIC Manufacturing Technology Institute,Beijing 100024,China;School of Materials Science and Engineering,Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]中国航空制造技术研究院,北京100024 [2]哈尔滨工业大学材料科学与工程学院,哈尔滨150001

出　　处：《航空制造技术》2021年第10期95-101,共7页Aeronautical Manufacturing Technology

摘　　要：TiB_(w)增强钛基复合材料具有优异的高温性能,在飞行器蒙皮、框梁等多种构件中具有广阔的应用前景。以TiB_(w)/TA15复合材料为对象,研究了轧制变形对TiB_(w)/TA15复合材料组织及性能影响行为。采用金相显微镜及扫描电镜分析了轧制变形后TiB_(w)/TA15复合材料板材组织,发现轧制变形后板材组织较为细小,增强相分布较为均匀,但存在因增强相断裂、破碎形成的微小缺陷。对其力学性能分析发现轧制变形后板材室温、高温拉伸性能与原始板坯相比强度提升10%以上,室温塑性由4.8%提升到8%;板材650℃高温持久性能与板坯相当,轧制变形对高温持久性能影响较小。TiB whisker reinforced titanium matrix composite has a wide range of potential applications in aircraft skin,frame beam and other components due to its excellent high temperature performance.The effect of rolling deformation on the microstructure and properties of TiB_(w)/TA15 composite was studied.The microstructure of TiB_(w)/TA15 composite sheets was analyzed by OM and SEM.It was found that the microstructure of TiB_(w)/TA15 composite sheet is fine,and TiB whiskers are uniformed distributed.But the micro cracks formed by the deformation of TiB_(w)phase are obviously observed.By analyzing the mechanical properties,it was found that the tensile strength of TiB_(w)/TA15 composite sheet is 10%higher than that of the slab at room temperature and 600-650℃.The tensile strain at room temperature increases from 4.8%to 8%after rolling deformation.The high temperature endurance property of TiB_(w)/TA15 composite sheets is similar with that of the slab.While rolling deformation has little effect on the high temperature durability.

关 键 词：TiB_(w)/TA15复合材料 轧制变形 板材 组织 力学性能 

分 类 号：TB333[一般工业技术—材料科学与工程]