TiH2制备纯的气氛烧结工艺研究

doi:１０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２２．０４．００１

昆明冶金高等专科学校学报 ›› 2022, Vol. 38 ›› Issue (4): 1-.DOI: １０．３９６９／ｊ．ｉｓｓｎ．１００９－０４７９．２０２２．０４．００１

• 冶金技术与材料 • 下一篇

TiH₂制备纯的气氛烧结工艺研究

刘捷，尚青亮，王晓东，张文莉

(昆明冶金高等专科学校冶金与矿业学院，云南昆明650033)

收稿日期:2022-04-19 出版日期:2022-08-30 发布日期:2023-11-29
作者简介:刘捷（１９８４－），女，云南昆明人，讲师，工学硕士，主要从事金属材料加工研究。
基金资助:
云南省教育厅科学研究基金教师类项目：Ｔｉ-Ｈ粉末体系性能及其烧结致密化机理研究（２０１８ＪＳ５５２）。

Atmosphere Sintering Process for Preparation of Pure Titanium Based on TiH₂

LIU Jie，SHANG Qingliang，Wang Xiaodong，ZHANG Wenli

( Faculty of Metallurgy and Mining Engineering, Kunming Metallurgy College, Kunming 650033, China)

Received:2022-04-19 Online:2022-08-30 Published:2023-11-29

摘要/Abstract

摘要： 以 Ti，粉为原料，经过冷等静压成型后进行真空烧结，烧结还微观结构存在孔隙，相对密度 98%，平均晶粒尺寸≥50 um。为细化烧结还的微观组织以提升力学性能指标，本实验在脱氢烧结之前通入比例为 ,:Ar=1:5的混合含氢氢气，氢分压为16887.5 Pa，在320C时保温6~8h，基体发生B-a+Ti 共析相变，形成了更细小均匀的微观组织。烧结后纯铁致密度均 >99%，平均晶粒度≤25 um。与真空烧结相比，抗拉强度平均提高了47%，延伸率平均提高了33%:与ASTM B348-10 标准相比，抗拉强度平均提高了10%，延伸率提高了20%。

关键词: TiH₂粉, 气氛烧结, 真空烧结, 共析相变

Abstract: With TiH, powder as raw material, vacuum sintering was carried out after cold isostatic pressing. There were pores in the microstructure of sintered billet, whose relative density was 98% , and theaverage grain size was > 50 m. In order to refine the microstructure of sintered billet and improve themechanical properties, mixed hydrogen containing argon with the ratio of H,: Ar = 1:5 was introducedbefore dehydrogenation sintering, and the hydrogen partial pressure was 16 887. 5 Pa. After sintering, thedensity of pure titanium was greater than 99% and the average grain size was 25 pm. Compared withvacuum sintering, the average tensile strength was increased by 47% and the average elongation in-creased by 33% ; compared with ASTM B348-10 standard, the average tensile strength was increased by10% ，and the elongation increased by 20% .

Key words: TiH₂powder, atmosphere sintering, vacuum sintering, eutectoid phase transformation

中图分类号:

TF124

刘捷, 尚青亮, 王晓东, 张文莉. TiH₂制备纯的气氛烧结工艺研究[J]. 昆明冶金高等专科学校学报, 2022, 38(4): 1-.

LIU Jie, SHANG Qingliang, Wang Xiaodong, ZHANG Wenli. Atmosphere Sintering Process for Preparation of Pure Titanium Based on TiH₂[J]. Journal of Kunming Metallurgy College, 2022, 38(4): 1-.

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TiH₂制备纯的气氛烧结工艺研究

Atmosphere Sintering Process for Preparation of Pure Titanium Based on TiH₂

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