Control of the high speed plastic properties by the phase boundaries in FCC+BCC multi phased steels

通过 FCC BCC 多相钢中的相界控制高速塑性性能

• 批准号: 23560839
• 负责人: UEJI Rintaro
• 金额: $ 3.58万
• 依托单位: Osaka University (2012-2013)Kagawa University (2011)
• 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-23560839/
• 关键词: 材料強度; 高速変形; 異相境界; 結晶塑性; オーステナイト; 鉄鋼材料; フェライト; 加工熱処理; 強度

This study is aimed to clarify the plastic properties of the ferrite and austenite duplex phase steels at high speed deformation. The stress - strain curves were measured with the sensing block type testing machine at various strain rate ranging from 0.001/s to 1000/s. It was clarified that the duplex phase steel has a significant increase of 0.2% offset stress with the strain rate increasing. The EBSD (Electron back scattering diffraction) measurement was conducted on the samples deformed up to various strain at various strain rate. The misorientation measurement at the vicinity of the phase boundaries were examined and the preferential development of the local misorientation was clarified. This means that the dislocation structure which provides the long range stress field can be easily evolved near the phase boundaries. In addition, the relationship between the dynamic phase transformation and the dislocation structure was also found.

研究了铁素体-奥氏体双相钢高速变形时的塑性。在应变速率为0.001/s ~ 1000/s范围内，用敏感块式试验机测量了应力-应变曲线。结果表明，随着应变速率的增加，双相钢的偏置应力显著增加0.2%。用电子背散射衍射（EBSD）方法对不同应变速率下的变形试样进行了测量。在相界附近的取向差的测量进行了检查和局部取向差的优先发展被澄清。这意味着提供长程应力场的位错结构可以容易地在相界附近演化。此外，还发现了动态相变与位错结构之间的关系。

项目成果

Grain size effect on high-speed deformation of Hadfield steel

• DOI: 10.1007/s10853-012-6604-y
• 发表时间: 2012-06
• 期刊: Journal of Materials Science
• 影响因子: 4.5
• 作者: R. Ueji;D. Kondo;Y. Takagi;T. Mizuguchi;Yasuhiro Tanaka;K. Shinagawa

高速変形および高温変形におけるハッドフィールド鋼の延性

Hadfield 钢在高速高温变形下的延展性

• 作者: 上路林太郎;吉迫竜也;戸高義一;品川一成
• 通讯作者: 品川一成

Crystallographic orientation dependence ofεmartensite transformation during tensile deformatio of polycrystalline 30%Mn austenitic steel

多晶30%Mn奥氏体钢拉伸变形过程中ε马氏体相变的晶体取向依赖性

• 发表时间: 2013
• 期刊: Materials Science and Engineering : A
• 作者: R.Ueji;Y.Takagi;N.Tsuchida;K.Shinagawa;Y.Tanaka;T.Mizuguchi
• 通讯作者: T.Mizuguchi

FSPによるHadfield鋼の表面改質

FSP 对 Hadfield 钢进行表面改性

• 作者: 上路林太郎;孫玉峰;森貞好昭;藤井英俊
• 通讯作者: 藤井英俊

ハッドフィールド鋼における引張変形のひずみ速度依存性に及ぼす粒界炭化物の影響

晶界碳化物对哈德菲尔德钢拉伸变形应变率依赖性的影响

• 发表时间: 2012
• 作者: 吉迫竜也;李大潤;上路林太郎;品川一成;水口隆;戸高義一
• 通讯作者: 戸高義一