Beneficial use of interstitial elements amd work hardening mechanism in high strength titanium alloys

高强度钛合金中间隙元素和加工硬化机制的有益利用

• 批准号: 23560840
• 负责人: TSUCHIYAMA Toshihiro
• 金额: $ 3.41万
• 依托单位: Kyushu University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011 至 2013
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23560840/
• 关键词: チタン合金; 侵入型元素; 酸素; 窒素; 機械的性質; 強度-延性バランス; 強度; 延性; 加工硬化; 中性子回折; 不均一変形

High oxygen or nitrogen titanium alloys were produced on the basis of a low alloy titanium alloy consisting of conventional alloying elements, and then the microstructure and mechanical property were investigated. As a result, the microstructure was hardly influenced by oxygen and nitrogen, while the strength of the alloys were greatly increased without deteriorating ductility too much. The reason of the improvement of mechanical property due to oxygen and nitrogen addition was discussed in terms of the strength ratio of alpha phase to beta phase,and then it was clarified by theoretical considerations of the strain uniformity effect as well as the positive work hardenability effect of beta phase.

在传统合金元素组成的低合金钛合金的基础上，制备了高氧、高氮钛合金，并对其显微组织和力学性能进行了研究。结果表明，氧和氮对合金的显微组织几乎没有影响，而合金的强度却大大提高，而塑性却没有太大的下降。从α相与β相强度比的角度讨论了氧氮合金力学性能提高的原因，并从β相的应变均匀性效应和正加工硬化效应的理论考虑进行了阐明。

项目成果

チタン合金の塑性変形挙動に及ぼす粒応力分配と集合組織の影響

晶粒应力分布和织构对钛合金塑性变形行为的影响

• 作者: 諸岡 聡;梅澤 修
• 通讯作者: 梅澤 修

「酸素を添加した2相チタン合金における加工硬化機構」

“加氧两相钛合金的加工硬化机理”

• 发表时间: 2014
• 作者: 土山聡宏;岡本惇志;姜徳守;高木節雄
• 通讯作者: 高木節雄

Enhanced work hardening by redistribution of oxygen In (α+β) type Ti-4Cr-0.2O alloy

通过氧再分布强化加工硬化 In (α+β) 型 Ti-4Cr-0.2O 合金

• 发表时间: 2014
• 期刊: Materials Science and Engineering A
• 作者: Duck-soo Kang;Norimitsu Koga;Nobuo Nakada;Toshihiro Tsuchiyama and S. Takaki
• 通讯作者: Toshihiro Tsuchiyama and S. Takaki

In-situ Neutron Diffraction Study on Tensile Deformation Behavior of Interstitials Strengthened Titanium Alloys

填隙强化钛合金拉伸变形行为的原位中子衍射研究

• 发表时间: 2011
• 作者: S. MOROOKA;O. UMEZAWA;M. SAKATA;T. TSUCHIYAMA and S. HARJO
• 通讯作者: T. TSUCHIYAMA and S. HARJO

(α+β)型Ti-4Cr合金の酸素添加による高延性化

添加氧提高(α+β)型Ti-4Cr合金的延展性

• 发表时间: 2013
• 作者: F. H. Latief;K. Kakehi;H. Murakami;竹内健司他;K. Akai,K. Kishimoto,T. Koyanagi,Y. Kono,S. Yamamoto;岡健介，戸高孝，榎園正人;岡本惇志,古賀紀光,姜徳守,土山聡宏,高木節雄
• 通讯作者: 岡本惇志,古賀紀光,姜徳守,土山聡宏,高木節雄