複合組織鋼の変形応力の secant 法を用いた上下界予測と関連ミクロ組織

概要

論文の詳細を見る
Elasto-plastic flow curves of dual phase steels consisting of martensite and ferrite have been predicted by using the secant method proposed by W_<ENG>. The predicted flow stress for a given volume fraction of martensite becomes the upper bound when the matrix is considered to be martensite, whilst the predicted flow stress becomes the lower bound when the matrix is ferrite. This prediction is compared with experimental results obtained from Mn-Si-C martensite-ferrite steels where the volume fraction and morphology were altered by changing heat treatment. It is found that the prediction is in good agreement with the experimental results when the matrix structure can be identified by means of optical microscopy. In the case where the matrix structure is percolated and is not distinguishable, the flow stress curves lie between those two bounds.
社団法人日本鉄鋼協会の論文
1997-12-01