Refine your search:     
Report No.
 - 
Search Results: Records 1-4 displayed on this page of 4
  • 1

Presentation/Publication Type

Initialising ...

Refine

Journal/Book Title

Initialising ...

Meeting title

Initialising ...

First Author

Initialising ...

Keyword

Initialising ...

Language

Initialising ...

Publication Year

Initialising ...

Held year of conference

Initialising ...

Save select records

Journal Articles

Hydrogen embrittlement resistance of pre-strained ultra-high-strength low alloy TRIP-aided steel

Hojo, Tomohiko*; Kumai, B.*; Koyama, Motomichi*; Akiyama, Eiji*; Waki, Hiroyuki*; Saito, Hiroyuki*; Shiro, Ayumi*; Yasuda, Ryo*; Shobu, Takahisa; Nagasawa, Akihiko*

International Journal of Fracture, 224(2), p.253 - 260, 2020/08

 Times Cited Count:5 Percentile:68.14(Materials Science, Multidisciplinary)

In the study, the pre-strain effect on hydrogen embrittlement property of the ultra-high-strength transformation-induced plasticity -aided bainitic ferrite steel was investigated towards application for automobile frame parts. 3-10% tensile pre-strain suppressed hydrogen-induced mechanical degradation relative to total elongation while 12-15% pre-strained specimen did not exhibit elongation after hydrogen charging. The advantageous effect of the 3-10% pre-strain was attributed to the suppression of crack initiation related to retained austenite. The TRIP by pre-straining decreased the volume fraction of retained austenite before hydrogen charging, thereby reducing existing probabilities of preferential crack initiation sites and propagation paths. Conversely, high pre-strain such as 12-15% does not effectively work due to work hardening resulting in increases in hydrogen embrittlement susceptibility and a significant increase in hydrogen content due to the multiplication of dislocations.

Oral presentation

Research and development of radiation-resistant elastomer material at a temperature of 300$$^{circ}$$C

Kikuma, Hiroyuki*; Takeuchi, Yukiko*; Nakamura, Shunsuke*; Sugimoto, Masaki; Nagasawa, Naotsugu; Shimada, Akihiko; Hakoda, Teruyuki; Taguchi, Mitsumasa

no journal, , 

no abstracts in English

Oral presentation

Microfabrication of biocompatible hydrogels by proton beam writing

Nagasawa, Naotsugu; Kimura, Atsushi; Idesaki, Akira; Ishii, Yasuyuki; Yamada, Naoto; Koka, Masashi; Shimada, Akihiko; Okubo, Takeru; Sato, Takahiro; Taguchi, Mitsumasa

no journal, , 

no abstracts in English

Oral presentation

Production of new polysaccharide gel by using ionic liquids and ionizing radiation

Kimura, Atsushi; Nagasawa, Naotsugu; Shimada, Akihiko; Taguchi, Mitsumasa

no journal, , 

no abstracts in English

4 (Records 1-4 displayed on this page)
  • 1