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Low‐Molecular Mass Organic Gelcasting of Titanium Hydride to Prepare Titanium
Author(s) -
Ye Qing,
Guo Zhimeng,
Lu Boxin,
Lin Junpin,
Shao Huiping
Publication year - 2015
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201400253
Subject(s) - materials science , titanium , ultimate tensile strength , slurry , composite material , ductility (earth science) , titanium hydride , sintering , chemical engineering , metallurgy , engineering , creep
Low‐molecular mass organic gelcasting is utilized to fabricate titanium structural materials. The aim is to find a low‐residual gel system for the fabrication of titanium with good ductility. The thermally reversible gel system is composed of 1,3:2,4‐dibenzylidene sorbitol (gelator) and 1‐butanol (solvent). Titanium hydride powders are used as raw material and the solid loading of gelcasting slurry reaches 48 vol%. Combination of dehydriding and sintering in one process accelerate densification and the relative sintered density reaches up to 97.5%. The contents of oxygen and carbon contamination are 0.31 and 0.08 wt%, respectively, which contribute to a high‐level of mechanical property with tensile strength of 580 MPa and elongation of 8%. To achieve the near‐net shape forming capability of low‐molecular mass organic gelcasting, rosin is used to increase the green strength. Eventually, titanium parts with complex shape are successfully prepared.