[S8] S8 Multi-scale analysis of elementary processes in plasticity (VIII)(1)

11:20 AM - 11:40 AM JST(2:20 AM - 2:40 AM UTC)

[S8.6] The effect of precipitates on the brittle-to ductile transition behavior of Ti-added ultra-low carbon steels

*TAKAGI Masaharu¹, MORIKAWA Tatsuya², YAMASAKI Shigeto², Tanaka Masaki², Ito Takanori³, Nanba Shigenobu³ (1. Kyushu Univ., 2. Kyushu Univ., 3. KOBELCO)

Keywords:

ferritic steel,brittle-to-ductile transition,dislocation glide,thermally activated process,long-range barrier

一般にパイエルスポンテシャルの高い結晶では，変形温度の上昇に伴い破壊形態が遷移するBDT挙動が見られる．本講演では，Ti添加極低炭素鋼のBDT挙動に析出物が及ぼす影響を応力遮蔽理論に基づき考察する．