公开(公告)号：US6106766A

公开(公告)日：2000-08-22

申请号：US236636

申请日：1999-01-26

申请人： Hisataka Kawai ,  Yoshikuni Kadoya ,  Koji Takahashi ,  Ryotaro Magoshi ,  Yasuhiko Yasumoto ,  Tomohiro Tsuchiyama

发明人： Hisataka Kawai ,  Yoshikuni Kadoya ,  Koji Takahashi ,  Ryotaro Magoshi ,  Yasuhiko Yasumoto ,  Tomohiro Tsuchiyama

IPC分类号： C22C38/00 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48 ,  C22C38/54 ,  F01D5/28

CPC分类号： F01D5/28 ,  C22C38/001 ,  C22C38/44 ,  C22C38/46 ,  C22C38/48

摘要： A material for a gas turbine disk comprises 0.05 to 0.15 wt % of carbon, 0.10 wt % or less of silicon, 0.40 wt % or less of manganese, 9.0 to 12.0 wt % of chromium, 1.0 to 3.5 wt % of nickel, 0.50 to 0.90 wt % of molybdenum, 1.0 to 2.0 wt % of tungsten, 0.10 to 0.30 wt % of vanadium, 0.01 to 0.10 wt % of niobium, 0.01 to 0.05 wt % of nitrogen, and a remainder comprising iron and unavoidable impurities, wherein the contents of nickel, molybdenum and tungsten satisfy a relationship -1.5 wt %.ltoreq.Mo+W/2-Ni.ltoreq.0.7 wt %. Accordingly, unlike conventional gas turbine disk materials such as a heat resisting steel of 12Cr-type which can be used in an operation at about 400.degree. C., but has reduced toughness and high-temperature creep characteristics in an operation at about 500.degree. C., this material is allowed to have a satisfactory toughness and excellent high-temperature creep characteristics and can be suitably used at high temperatures.

摘要翻译： 用于燃气轮机盘的材料包括0.05至0.15重量％的碳，0.10重量％或更少的硅，0.40重量％或更少的锰，9.0至12.0重量％的铬，1.0至3.5重量％的镍，0.50至 钼的0.90重量％，钨的1.0〜2.0重量％，钒的0.10〜0.30重量％，铌的0.01〜0.10重量％，氮的0.01〜0.05重量％，余量由铁和不可避免的杂质构成，其中， 的镍，钼和钨满足关系-1.5重量％，Mo + W / 2-Ni <0.7重量％。 因此，不同于常规的燃气轮机盘材料，例如可在约400℃操作的12Cr型耐热钢，但在约500℃的操作中具有降低的韧性和高温蠕变特性 该材料具有令人满意的韧性和优异的高温蠕变特性，并且可以在高温下适当使用。