A clarification on mechanism of improvement in energy absorption capacity and time hierarchy of impact deformation behavior in TRIP steel

TRIP钢能量吸收能力和冲击变形行为时间层次改善机制的澄清

• 批准号: 23560086
• 负责人: IWAMOTO Takeshi
• 金额: $ 3.41万
• 依托单位: Hiroshima 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-23560086/
• 关键词: TRIP鋼; 相変態; 衝撃エネルギー; 時間的階層性

A circuit based on the Kelvin double bridge was developed. Then, a change in resistance of the specimen made of TRIP steel was measured. In addition, a precision of the measured value was attempted to be improved and a validity of the developed circuit was confirmed. Temperature was measured by using extremely-thin thermocouple with 80 micron in diameter. On the other hand, fracture toughness under impact loading was evaluated and its multi-scale property in time domain was attempted to be clarified experimentally. The finite element simulation under similar condition of the experiments conducted was performed. Finally, the mechanism of improvement in impact energy absorption of TRIP steel was attempted to be clarified from the viewpoint of multi-scale in time.

设计了一种基于Kelvin双桥的电路。然后，测量由TRIP钢制成的试样的电阻变化。此外，还试图提高测量值的精度，并证实了所开发电路的有效性。温度测量采用直径为80 μ m的超薄热电偶。另一方面，对冲击载荷下的断裂韧性进行了评价，并试图从实验上阐明其时域多尺度特性。在与实验条件相似的条件下进行了有限元模拟。最后，从时间多尺度的角度对TRIP钢冲击吸能性能提高的机理进行了初步探讨。

项目成果

A study on rate sensitivity of impedance in TRIP steel during deformation at various strain rate under two kinds of deformation mode

两种变形模式下TRIP钢不同应变速率变形过程中阻抗的速率敏感性研究

• 发表时间: 2014
• 期刊: Applied Mechanics and Materials
• 作者: M. Daimaruya;Hiroyuki Fujiki;H. Ambarita;臺丸谷政志，藤木裕行，Himsar Ambarita;蓋丸谷政志,藤木裕行,H. Ambarita;臺丸谷政志，藤木裕行，Himsar Ambarita;Daiki Inoshita and Takeshi Iwamoto
• 通讯作者: Daiki Inoshita and Takeshi Iwamoto

透磁率評価によるTRIP鋼に生成するマルテンサイト変態のひずみおよびひずみ速度依存性評価

通过渗透率评估 TRIP 钢中产生的马氏体转变的应变和应变速率依赖性

• 发表时间: 2014
• 作者: Nurul;I. M.;Arai;Y. and Araki;W.;森山優太朗,井下大輝,岩本剛
• 通讯作者: 森山優太朗,井下大輝,岩本剛

種々の変形速度におけるTRIP鋼の曲げ変形挙動の有限要素シミュレーション

TRIP钢在不同变形率下弯曲变形行为的有限元模拟

• 发表时间: 2013
• 作者: Wakako Araki;Hiroki Shintaku;Hiroyuki Ohashi;Yoshiki Horiuchi and Yoshio Arai;水沼宏幸,石磊石,岩本剛
• 通讯作者: 水沼宏幸,石磊石,岩本剛

塑性変形を受けるTRIP鋼のインピーダンス変化の実験的評価

TRIP钢塑性变形阻抗变化的实验评估

• 发表时间: 2012
• 作者: Leishi Shi;Takeshi IWAMOTO and Hiroyuki Mizunuma;荒居善雄,荒木稚子;井下大輝，岩本剛;川端敏之,橋本慎也,岩本剛,沢俊行;井下大輝,山中志郎,岩本剛,沢俊行
• 通讯作者: 井下大輝,山中志郎,岩本剛,沢俊行

塑性変形を受けるTRIP鋼の体積抵抗率変化の実験的評価

TRIP钢塑性变形体积电阻率变化的实验评价

• 发表时间: 2011
• 作者: Wakako Araki;Yoshio Arai;Jurgen Malzbender;山中志郎,岩本剛,沢俊行
• 通讯作者: 山中志郎,岩本剛,沢俊行