摘要
通过放电等离子烧结(SPS)技术制备铜(Cu)和氧化石墨烯(GO)协同增强的钛基复合材料(GO/Cu/TA1),研究了氧化石墨烯和Cu元素对钛基复合材料组织、硬度及拉伸性能的影响。结果表明:GO/Cu/TA1复合材料晶内析出金属间化合物Ti_(2)Cu相,晶界处存在非连续分布的TiC颗粒。复合材料的抗拉强度和屈服强度较TA1纯钛分别提高了66%和82%,显微硬度提升了58.4%,且延伸率保持在15%左右。硬度及强度的提升归因于晶界处分布的TiC颗粒与晶内析出的金属间化合物Ti_(2)Cu相的协同强化作用。
Cu and graphene oxide(GO)enhanced titanium matrix composites(GO/Cu/TA1)were prepared by spark plasma sintering(SPS)technology.The effects of graphene oxide and Cu on the microstructure,hardness and tensile properties of the titanium matrix composites were investigated.The results show that intermetallic Ti_(2)Cu phase is precipitated in GO/Cu/TA1 composites,and discontinuous TiC particles exist at grain boundaries.Compared with TA1 pure titanium,the tensile strength and yield strength of the composite are increased by 66%and 82%respectively,the microhardness is increased by 58.4%,and the elongation is maintained at about 15%.The increase in microhardness and strength can be attributed to the synergistic strengthening effect of TiC particles distributed at the interface and intermetallic compounds Ti_(2)Cu distributed within the grains.
作者
欧阳文博
任利娜
黄先明
陈永楠
Ouyang Wenbo;Ren Lina;Huang Xianming;Chen Yongnan(Western Titanium Technologies Co.,Ltd.,Xi’an 710201,China;Chang’an University,Xi’an 710064,China)
出处
《钛工业进展》
CAS
2022年第4期25-29,共5页
Titanium Industry Progress
基金
陕西省重点研发计划重点产业创新链(工业领域)项目(2020ZDLGY01-07)。
关键词
TA1纯钛
氧化石墨烯
显微组织
硬度
拉伸性能
TA1 pure titanium
graphene oxide
microstructure
hardness
tensile property
