M&M材料力学カンファレンス
Online ISSN : 2424-2845
セッションID: GS0208-217
会議情報
GS0208-217 二種のTWIP鋼における微小き裂進展挙動の比較研究 : Mh-C相互作用による疲労限創出の可能性
小山 元道山村 悠祐津崎 兼彰野口 博司
著者情報
会議録・要旨集 フリー

詳細
抄録
The high cycle fatigue properties of Fe-30Mn-3Si-3Al and Fe-22Mn-0.5C twinning-induced plasticity (TWIP) steels were evaluated by rotary bending fatigue testing and a replica technique. More specifically, small fatigue crack propagation and non-propagating fatigue crack phenomenon were comparatively studied in terms of occurrence of dynamic strain aging. In fact, dynamic strain aging occurs in the Fe-22Mn-0.5C TWIP steel because of the presence of Interstitial-substitutional (I-S) atom interactions. Probably due to the occurrence of dynamic strain aging, only the Fe-22Mn-0.5C TWIP steel showed non-propagating fatigue crack phenomenon at the fatigue limit. In contrast, a small fatigue crack of the Fe-30Mn-3Si-3Al TWIP steel continuously propagated even at the fatigue limit which was defined that the specimen does not fracture until 10^7 cycles.
著者関連情報
© 2015 一般社団法人 日本機械学会
前の記事 次の記事
feedback
Top