The development of Fe_3Al base heat resistant alloys with specificstrength as high as Ti alloys

比强度与钛合金相当的Fe_3Al基耐热合金的研制

• 批准号: 20760461
• 负责人: KOBAYASHI Satoru
• 金额: $ 2.75万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Young Scientists (B)
• 财政年份: 2008
• 资助国家: 日本
• 起止时间: 2008 至 2009
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-20760461/
• 关键词: 強度; 靭性; 破壊; 疲労; クリープ; 応力腐食割れ; 超塑性; 磨耗; 耐熱材料; 軽量化; ユビキタス元素; 金属組織学; 金属間化合物; 加工熱処理

The study is aimed at developing heat resistant Fe_3Al base alloys with high specific strength to replace commercial Ti alloys and heat resistant steels. The objective of this study was two-fold. First, to study the strengthening mechanism of thermomechanically processed Fe_3Al alloys. Second, to investigate high temperature strength and microstructural stability of thermomechanically processed Fe_3Al alloys. The main results are :(1) The introduction of relatively fine κ-Fe_3AlC carbide particles into the matrix during warm rolling promotes the subdivision of matrix grains and is thus effective for strengthening the alloys at relatively low temperatures.(2) The addition of a small amount of Mo into the alloys is beneficial to enhance 0.2% proof stress below 600℃ and the microstructural stability at high temperatures.

本研究的目的是开发高比强度的Fe_3Al基耐热合金，以取代工业钛合金和耐热钢。本研究的目的是双重的。首先，研究了形变热处理Fe_3Al合金的强化机理。其次，研究了形变热处理后Fe_3Al合金的高温强度和组织稳定性。主要结果如下：（1）温轧时向基体中引入相对细小的κ-Fe_3AlC碳化物颗粒，促进了基体晶粒的细化，对合金的低温强化有效。(2)在合金中加入少量Mo有利于提高合金在600℃以下的0.2%屈服强度和高温组织稳定性。

项目成果

加工・熱処理によるFe3Al基合金の高強度化-炭化物析出粒子による加工組織の微細化と安定化-.

通过机械加工和热处理提高 Fe3Al 基合金的强度 - 通过碳化物沉淀颗粒细化和稳定加工组织。

• 发表时间: 2010
• 作者: 小林覚;高杉隆幸
• 通讯作者: 高杉隆幸

Microstructure and High Temperature Strength in Fe_3Al Base Alloys Containing Fine Carbide Particles

含细碳化物颗粒Fe_3Al基合金的显微组织和高温强度

• 发表时间: 2010
• 期刊: Proceedings of The 7th Pacific Rim International Conference on Advanced Materials and Processing
• 作者: Satoru Kobayashi;Ryo Makihara;Takayuki Takasugi
• 通讯作者: Takayuki Takasugi

The Effects of Annealing Temperature on Tensile Properties in a Fine-grained Fe3Al-based Alloy Containingκ-Fe3AlC Carbide Particles.

退火温度对含有κ-Fe3AlC碳化物颗粒的细晶Fe3Al基合金拉伸性能的影响。

• 发表时间: 2008
• 作者: Takei A;Kobayashi S. Takasugi T
• 通讯作者: Kobayashi S. Takasugi T

The Effects of Annealing Temperature on Tensile Properties in a Fine-grained Fe_3Al-based Alloy Containning k-Fe_3AlC Carbide Particles

退火温度对含k-Fe_3AlC碳化物颗粒的细晶Fe_3Al基合金拉伸性能的影响

• 发表时间: 2009
• 期刊: Proceedings of Materials Research Society Symp osium, Materials Research Society 1128未定(印刷中)
• 作者: Akira Takei;Satoru Kobayashi;Takayuki Takasugi
• 通讯作者: Takayuki Takasugi

Grain Refinement for Strengthening in Fe_3Al-based Alloys through Thermomechanical Processing

通过热机械加工细化 Fe_3Al 基合金的晶粒强化

• 发表时间: 2008
• 作者: Satoru Kobayashi;Akira Takei;Takavuki Takasuai
• 通讯作者: Takavuki Takasuai