Study on texture memory effect in nickel aluminide

铝化镍织构记忆效应研究

• 批准号: 23560886
• 负责人: DEMURA Masahiko
• 金额: $ 3.49万
• 依托单位: National Institute for Materials Science
• 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-23560886/
• 关键词: 結晶・組織制御; 再結晶・粒成長集合組織; 金属間化合物; ニッケルアルミナイド; 強圧延; 単結晶; 結晶方位解析; 複相; 集合組織; 再結晶・粒成長

A sharp texture of heavily cold-rolled nickel aluminide single crystals is disintegrated in an early stage of annealing, but it finally returns to the sharp texture, which is very similar to that in the cold-rolled state. This interesting phenomenon is termed as texture memory effect. Recently, we found that no texture memory effect occurs in two-phase alloys, where the nickel aluminide is coherently precipitated in a nickel solid-solution matrix. This study aimed to clarify factors necessary for the occurrence of the texture memory effect.Firstly, we confirmed that no texture memory effect occurs in a nickel solid-solution single phase. Based on the electron microscopic analyses, we concluded that there are two requisites for the occurrence of the texture memory effect: (1) enough strain is accumulated in the cold rolling process and (2) grain boundary move freely with no obstacles like intereface.

在退火的早期阶段，重冷轧的镍铝化物单晶的尖锐织构被分解，但它最终返回到尖锐织构，这与冷轧状态非常相似。这种有趣的现象被称为纹理记忆效应。最近，我们发现，没有织构记忆效应发生在两相合金，其中镍铝化物是共格沉淀在镍固溶体基体。本研究的目的是阐明织构记忆效应发生的必要因素。首先，我们证实了镍固溶体单相中不存在织构记忆效应。通过电镜分析，我们认为织构记忆效应的产生有两个条件：（1）冷轧过程中积累了足够的应变;（2）晶界自由移动，没有界面等障碍物。

项目成果

Slip system analysis in the cold rolling of a Ni3Al single crystal

Ni3Al单晶冷轧滑移系分析

• DOI: 10.4028/www.scientific.net/msf.783-786.1111
• 发表时间: 2014
• 期刊: Materials Science Forum
• 作者: Demura;M.; Raabe;D.; Roters;F.; Eisenlohr;P.; Xu;Y.; Hirano;T.; Kishida
• 通讯作者: T.; Kishida

Texture memory effect of heavily cold- rolled Ni_3Al. G. Gottstein Honorary Symp. on Characterisation and Design of Microstructure for Adv. Materials

重冷轧Ni_3Al的织构记忆效应

• 发表时间: 2012
• 作者: Demura M.;Xu Y.;Hirano T.
• 通讯作者: Hirano T.

Texture memory effect of heavily cold- rolled Ni3Al

重冷轧Ni3Al的织构记忆效应

• 发表时间: 2012
• 作者: Masahiko Demura;Ya Xu;and Toshiyuk Hirano
• 通讯作者: and Toshiyuk Hirano

Ni/Ni3Al複相組織を利用したプレート触媒の高活性化

利用Ni/Ni3Al多相结构实现板式催化剂的高活化

• 发表时间: 2011
• 作者: 出村雅彦;HyeYoun Lee;許亜;Dang-Moon Wee;平野敏幸
• 通讯作者: 平野敏幸

Mechanism of texture memory effect in the heavily cold-rolled Ni3Al single crystals

重冷轧Ni3Al单晶的织构记忆效应机制

• 发表时间: 2011
• 作者: M.Demura;Ya Xu;T.Hirano
• 通讯作者: T.Hirano