年次大会 : Mechanical Engineering Congress, Japan 2012 "F041002-1"-"F041002-4" 2012年9月
The process development to manufacture ultrafine grained steels has, recently, become a hot topic for researc all over the world. Ultrafine structure can be fabricated by the concept of "high Z - large strain deformation". Z expresses Zener - Holl...
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 39A(9) 2068-2076 2008年9月
Fatigue tests under rotating bending were conducted on nitrided ultrafine ferrite-cementite steels. The ultrafine ferrite-cementite steels included carbon-increased and phosphorus-added versions to investigate the effects of grain growth suppressi...
METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE 38A(12) 2984-2991 2007年12月
To investigate the effects of precipitation, solid-solution, and dislocation strengthening on fatigue strength, fatigue tests were conducted on a series of ultrafine ferrite-cementite steels, the ferrite grains of which were smaller than 1 mu m. T...