Introduction

  • Studies on mechanisms of environmental assisted cracking in pressure boundary materials for pressurized water reactors

    To contribute to the clarifying of the mechanisms and establishing of the countermeasure on SCC of pressure boundary materials for PWRs, collaborative research programs are conducting with Japanese PWR utilities on the stress corrosion cracking initiation and propagation characteristics for the laboratory experiments and actual experiences in commercial PWR plants, and studying on the evaluation of the materials and stresses by the high resolution analytical instruments from the view point of high nano-technology.

  • Studies on propagation rate estimation of environmental assisted cracking for structural materials

    To improve the reliability, safety and economy of the current nuclear power plants, BWR and PWR, cooperative research programs are promoted with worldwide participation of organizations and specialists. One of the stem activities is to develop innovative new materials that are highly reliable in practical applications. The main feature of the approach is to apply modern “nano-meter level” technologies to the clarification of complicated materials degradation mechanisms specific to the reactor environment. Specific attention has been paid to the analyses of crystal grain structure and stresses.

  • Studies on development of high resistant materials to environmental assisted cracking

    Developing the highly SCC resistant and high temperature weld cracking resistant new structural materials that meet to current material standards are conducting based upon the results of the above essential mechanistic studies and fundamental scientific principles.

  • Studies on development of high resistant welding materials to hot-cracking

    To develop the high resistant nickel based alloys to weld hot cracking, the fundamental studies are performing on the effect of fundamental characteristics and metallurgical factors on weld hot cracking for laboratory melted nickel based testing alloys.

What's new?

2011/03/11
Thank you very much for kind E-mail, telephone, letter, etc. on sincere sympathy from many people, after huge earthquake of Higashinihon. Our office was damaged by this huge earthquake, but our family and us are all safe. And also, our laboratory was not so sverely damaged. We will make more efforts to conduct much more research works and give education.
2011/03/08
Performed the report meeting on collaboration works of FY. 2010 with Tokyo Electric Power Company.
2011/01/18
Performed the report meeting on collaboration works of FY. 2010 with 5 Japanese PWR Electric Power Companies.
2010/12/22
The third steak party of our laboratory was held with Japanese fillet beef, Champagne, Bordeaux red wine and Chablis white wine, by Chef Prof. Yonezawa.
2010/11/05
Steering Committee Meeting of our endowed chair was held at Kobe Shipyard & Machinary Works of Mitsubishi Heavy Industries, Ltd. under attending of Mr.Suzuki Deputy General Manager, Prof. Wada, Chaiman of Mechanical Engineering Course.
2010/10/7
--10/8
Made a visiting trip to Kobe Shipyard & Machinary Works, and Takasago R & D Center of Mitsubishi Heavy Industries, Ltd. by about 20 staffs & students.
2010/07/23
The 2nd steak party of our laboratory was held with Japanese fillet beef, Champagne, Bordeaux red wine and Chablis white wine, by Chef Prof. Yonezawa.
2010/04/05
Mr.S.Yaguchi joined to one of the members as the student for undergraduate course of Ph.D.
2010/04/01
Associate Professor Miyahara joined.
2009/07/08
Mr.A.Hashimoto Joined as the research engineer.
2009/07/01
MMs.M.Matsuda joined as a secretary.
2009/06/30
The opening ceremony of Yonezawa Lab. was held under the attendance of Executive Vice President of Mitsubishi Heavy Industries, Ltd. Mr. A.Sawa
2009/04/01
Yonezawa Lab. started.