Microstructure and properties of fine-grained pure Ti materials for golf heads
YANG Hong1.,ZHANG Haolin2.,ZHOU Zheng2.
(1.School of Physical Education, Henan University of Science and Technology, Luoyang 471023, China;2. Col‐
lege of Materials Science and Engineering, Henan University of Science and Technology, Luoyang 471023, China)
摘要高尔夫球头的高强度打击面非常关键,优异性能的球头材料能够保证良好的操控性和容错值、更
高的击球精准度和更远的击球距离。采用高能球磨+冷等静压+真空烧结+热挤压工艺制备了细晶纯 Ti
材料,采用扫描电镜(SEM)和拉伸试验机对未挤压态和挤压态纯 Ti 材料的组织及性能进行了研究。结
果表明:高能球磨 5 h 后,球形 Ti 粉末转化为细小的纳米碎颗粒,平均粒径由 25 μm 降低至 5 μm 以下,且
分散均匀。挤压态细晶纯 Ti 的组织晶粒得到了充分细化,并且晶粒内部的微空隙缺陷消失。此外,挤压
态细晶纯 Ti 的抗拉强度、屈服强度、伸长率相比于未挤压态均提高约 16.1%、19.7% 和 16.3%。断口形貌
显示挤压态细晶纯 Ti 的断口韧窝数量更多,而且深度小而均匀,撕裂棱分布的更加密集。
Abstract:The high-strength face of the golf head is very significant, and the high-performance ball head material
can ensure good control and forgiveness, higher hitting accuracy and longer hitting distance. In this paper, the finegrained pure Ti materials were fabricated by high-energy ball milling, cold compaction, vacuum sintering and hot
extrusion, and the microstructure and properties of as-unextruded and as-extruded fine-grained pure Ti were sys‐
tematically studied by scanning electron microscope(SEM)and tensile testing machine. The results show that the
spherical Ti powders are transformed into fine nano-crushed particles after high-energy ball milling for 5 hours,
and the average particle size is reduced from 25 μm to less than 5 μm and the dispersion is uniform. The microstruc‐
ture and grains of as-extruded fine-grained pure Ti are adequately refined and the micro-void defects in the grains
disappeare. In addition, the tensile strength, yield strength and elongation of the as-extruded fine-grained pure Ti
are increased by about 16.1%, 19.7% and 16.3% compared with the as-unextruded. The fracture morphology shows
that compared with before extrusion, the number of fracture dimples of the as-extruded fine-grained pure Ti is
more, and the depth is small and uniform, and the distribution of tearing edges is more dense.
杨 洪,张浩霖,周 正. 高尔夫球头用细晶纯Ti材料的组织及性能研究[J]. 粉末冶金工业, 2023, 33(03): 38-43.
YANG Hong,ZHANG Haolin,ZHOU Zheng. Microstructure and properties of fine-grained pure Ti materials for golf heads. Powder Metallurgy Industry, 2023, 33(03): 38-43.