口腔医学研究 ›› 2024, Vol. 40 ›› Issue (8): 693-699.DOI: 10.13701/j.cnki.kqyxyj.2024.08.006

• 口腔种植学研究 • 上一篇    下一篇

微量Ti-6Al-4V掺杂对SLM打印纯钛机械性能与显微结构的影响

阿伊森·赛米, 何俊杰, 张文娜, 骆小平*   

  1. 南京大学医学院附属口腔医院,南京市口腔医院,南京大学口腔医学研究所 江苏 南京 210001
  • 收稿日期:2024-01-10 出版日期:2024-08-28 发布日期:2024-08-22
  • 通讯作者: *骆小平,E-mail:l_xiaoping@yahoo.com
  • 作者简介:阿伊森·赛米(1993~ ),女,乌鲁木齐人,硕士,医师,主要从事增材制造材料与临床修复体相关研究。
  • 基金资助:
    江苏省科技厅重点研发计划(编号:BE2021608)

Mechanical Properties and Microstructure of Pure Titanium through Adding Trace Ti-6Al-4V Powder in SLM Manufacturing

SAIMI·Ayisen, HE Junjie, ZHANG Wenna, LUO Xiaoping*   

  1. Nanjing Stomatological Hospital, Affiliated Hospital of Medical School, Nanjing University, Nanjing 210001, China
  • Received:2024-01-10 Online:2024-08-28 Published:2024-08-22

摘要: 目的: 探究选区激光熔化(selective laser melting,SLM)打印制造的添加微量Ti-6Al-4V粉末的纯钛材料,在两种不同热处理温度(650 ℃,2 h和700 ℃,2 h)及不同扫描速度(1000 mm/s和500 mm/s)下的机械性能。方法: 制备SLM打印的试样,测试材料的机械性能,观察拉伸试样的断口形貌及显微结构。结果: SLM打印的纯钛试样的极限拉伸强度在1000 mm/s扫描速度时高于500 mm/s扫描速度时的25%;在650 ℃及700 ℃不同热处理条件下,650 ℃,2 h在两种扫描速度下都表现出更加优异的机械性能,但延伸率在700 ℃,2 h在低扫描速度组更高。结论: 添加微量Ti-6Al-4V粉末后打印的纯钛材料相较于Ti-6Al-4V合金更能满足口腔修复体的要求。

关键词: 选区激光熔化, 增材制造, 义齿支架, 机械性能, 钛, Ti-6Al-4V, 合金, 热处理

Abstract: Objective: To investigate the mechanical properties of pure titanium by adding trace Ti-6Al-4V powder in SLM printing manufacturing at two different heat treatment temperatures (650 ℃,2 h and 700 ℃,2 h) and different scanning speeds (1000 mm/s and 500 mm/s). Methods: SLM samples with two different scanning speed (GA:1000 mm/s,GB:500 mm/s) were prepared and heat treated with 650 ℃,2 h (HT1) and 700 ℃,2 h (HT2). The mechanical properties of the materials were tested, and the fracture morphology and microstructure were observed with LSCM and SEM. Results: The tensile strength of SLM printed pure titanium samples was higher at 1000 mm/s(>20%), and the elongation was higher at 500 mm/s. Consistent annealing revealed that the 650 ℃, 2 h treatment yielded outstanding mechanical performance at both scanning speeds. Conclusion: SLM-ed pure titanium material by adding trace Ti-6Al-4V powder can better meet the requirements of oral restorations compared to SLM-ed Ti-6Al-4V alloy.

Key words: selective laser melting, additive manufacturing, denture framework, mechanical properties, titanium, Ti-6Al-4V, alloy, heat treatment