A Study of the diffusion process of TiAl-based intermetallic compound by using pure plate

• Main Authors: Chien-Hsin Huang, 黃建芯
• Other Authors: Jin-Bin Yang
• Format: Others
• Language: zh-TW
• Published: 2007
• Online Access: http://ndltd.ncl.edu.tw/handle/79593267036747102431

碩士 === 國立高雄第一科技大學 === 機械與自動化工程所 === 95 === TiAl-based intermetallics have a high potential to become an alternative material to superalloys for the applications of aerospace engine and structural parts due to their high contrast strength, excellent high temperature oxidation resistance.Because the vacuum solid phase thermo-compression sintering manufacture regulation in prepares makes the TiAl intermetallics compound aspect, has in the material quality advantage. Therefore this research key take vacuum solid phase thermo-compression sintering manufacture regulation as main research direction.Speaking of the TiAl pure thin planking material vacuum solid phase thermo-compression sintering manufacture regulation, take uses the pure thin planking as material and by HP or the constant pressure the sintering way, not only the material obtains easily, the price is cheap, moreover the equipment operating cost is inexpensive, formerly the preparatory work was easy, to have value of the investment research.This research purpose by pure Ti and Al thin planking material by way of the vacuum solid phase thermo-compression sintering way, develops the TiAl-based intermetallics compound manufacture of regulation, expected can obtain billet of the complete homogenization, and establishes its manufacture of regulation parameter and the correlation is pressing the mold design technology. The result showed that, in this solid phase thermo-compression sintering experiment, may achieve by 630℃/10MPa/96hr + 950℃/50MPa + 1350℃/12hr the condition purpose of the billet homogenization. Its microstructure γ-TiAl + Ti3Al + (γ+α2) Lamellar structure, namely so-called Partially Lamellar Structure, close so-called γ+ (γ+α2) Lamellar Duplex organization, demonstrates manufacture of regulation plan and the mold design this research for feasible.