Prohlížení dle autora "Koga, Norimitsu"

Crack initiation and propagation behavior in γ’-Fe4N layer during monotonic and cyclic tensile deformation in the nitrided ultra-low carbon steel

Koga, Norimitsu; Saito, Susumu; Umezawa, Osamu (Journal of Materials Science. 2022, vol. 57, issue 3, p. 2194-2207.)

Deformation structure around a crack in γ′-Fe4N layer of nitrided extra-low-carbon steel subjected to cyclic tensile test

Koga, Norimitsu; Tanahara, Kento; Umezawa, Osamu (Metallurgical and Materials Transactions A. 2022, vol. 53, issue 4, p. 1150-1155.)

Effects of vanadium addition on strain distribution, crack initiation and propagation during low-cycle fatigue test in ferrite and martensite dual-phase steel

Koga, Norimitsu; Kaseya, Akihiro; Umezawa, Osamu; Nakata, Hiroshi; Toyoda, Shunsuke (ISIJ International. 2022, vol. 62, issue 10, p. 2132-2134.)

High-temperature hardness in hypereutectoid steels with various microstructures measured by using small ball rebound hardness test

Koga, Norimitsu; Koizumi, Kouki; Takayasu, Shuto; Umezawa, Osamu; Watanabe, Mizuki; Yamamoto, Masayuki; Yamamoto, Takashi (Materials Transactions. 2023, vol. 64, issue 7, p. 1600-1604.)

Statistical analysis of influential factors on the stability of retained austenite in low alloy TRIP steel

Koga, Norimitsu; Yamashita, Takayuki; Ogawa, Keisuke; Umezawa, Osamu (Materials Transactions. 2022, vol. 63, issue 5, p. 693-702.)

Visualization of strain distribution around fatigue crack developed by low cycle fatigue test in high-strength steels using digital image correlation method for replica films

Koga, Norimitsu; Sakamaki, Yuta; Kaseya, Akihiro; Umezawa, Osamu; Nakata, Hiroshi; Toyoda, Shunsuke (Materials Characterization. 2022, vol. 185.)