Cr-Ni オーステナイト鋼の機械的性質および磁気的性質に及ぼす合金元素と加工熱処理の影響

概要

論文の詳細を見る
Effects of alloying elements and thermomechanical treatment on mechanical and magnetic properties of Cr-Ni austenitic stainless steel have been investigated. N and Si increase hardness after cold rolling as well as strain age hardening. Si decreases γ stability with respect to α' transformation, while other alloying elements increase it. Nonmagnetism can be maintained by controlling Ni_<eq>, an index of γ stability. High strength-nonmagnetic stainless steel can be obtained by utilizing strain age hardening and Ni_<eq>. Si changes deformation mode from dislocation multiplications to formation of stacking faults. Si increases X-ray halfwidth at a given cold rolled condition, while decreasing it after aging treatment. It is considered that a large strain age hardening by Si is attributed to increase of internal strain and precipitation hardening. The decrease of γ stability by the addition of Si may be due to the accerelation of formation of α' phase by virtue of ε phase.
社団法人日本鉄鋼協会の論文
1990-06-01