公开(公告)号：US4963200A

公开(公告)日：1990-10-16

申请号：US338932

申请日：1989-04-11

申请人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

发明人： Takanari Okuda ,  Shigeo Nomura ,  Itaru Shibahara ,  Yuji Enokido ,  Masayuki Fujiwara ,  Toshio Nishida ,  Hiroshi Teranishi ,  Susumu Hirano ,  Aturou Iseda ,  Motoharu Nakajima

IPC分类号： C22C32/00 ,  C22C33/02

CPC分类号： C22C33/0228 ,  C22C32/0026 ,  C22C33/0285 ,  B22F2003/208 ,  B22F2003/248 ,  B22F2009/041 ,  B22F2998/10

摘要： A dispersion strenghened ferritic steel having excellent ductility and toughness which has been heat treated to produce a matrix having a tempered martensitic structure composed of 0.05 to 0.25% by weight of carbon, 0.1% by weight or less of silicon , 0.1% by weight or less of manganese, 8 to 12% by weight of chromium, 0.1 to 4.0% by weight in total of molybdenum and tungsten, and 0.02% by weight or less of oxygen (exclusive of oxide particles) with the balance being iron and inevitable impurities and, homogeneously dispersed in the matrix, composite oxide particles comprising Y.sub.2 O.sub.3 and TiO.sub.2 in an amount of 0.1 to 1.0% by weight in total of Y.sub.2 O.sub.3 and TiO.sub.2 and a TiO.sub.2 to Y.sub.2 O.sub.3 molar ratio of 0.5 to 2.0.

摘要翻译： 分散强化了具有优异的延展性和韧性的铁素体钢，其经过热处理以制备具有由0.05-0.25重量％的碳，0.1重量％或更少的硅，0.1重量％以下的回火马氏体组成的基体 的锰，8〜12重量％的铬，0.1〜4.0重量％的钼和钨，0.02重量％以下的氧（不包含氧化物粒子），余量为铁和不可避免的杂质， 均匀分散在基质中，包含Y2O3和TiO2的总重量为0.1〜1.0重量％，TiO 2与Y 2 O 3摩尔比为0.5〜2.0的Y2O3和TiO2的复合氧化物粒子。