公开(公告)号：US6159314A

公开(公告)日：2000-12-12

申请号：US261230

申请日：1999-03-03

申请人： Yutaka Koizumi ,  Toshiharu Kobayashi ,  Shizuo Nakazawa ,  Hiroshi Harada ,  Tosihiro Yamagata ,  Takehisa Hino ,  Yomei Yoshioka

发明人： Yutaka Koizumi ,  Toshiharu Kobayashi ,  Shizuo Nakazawa ,  Hiroshi Harada ,  Tosihiro Yamagata ,  Takehisa Hino ,  Yomei Yoshioka

IPC分类号： F01D25/00 ,  C22C19/05 ,  C22F1/00 ,  C22F1/10 ,  F02C7/00

CPC分类号： C22F1/10

摘要： The invention relates to a nickel-base single-crystal superalloy applied to parts for industrial gas turbine or the like such as turbine rotor blade and stator blade which are used at high temperatures, a method for manufacturing the same, and gas turbine parts prepared from such nickel-base single-crystal superalloys, and more particularly the invention provides a nickel-base single-crystal superalloy consisting essentially of, in percentages by weight, 5% to 10% cobalt, 4.7% to 6% chromium, more than 2.0% to less than 3.5% molybdenum, 7.5% to 10% tungsten, 5% to 6% aluminum, 0.1% to 2% titanium, 4% to 5.5% tantalum, 1% to 4% rhenium, 0.01% to 0.2% hafnium, the balance being nickel and incidental impurities, which is excellent in high-temperature strength and high-temperature corrosion resistance, and further excellent in structural stability even in a long time use.

摘要翻译： 本发明涉及一种应用于工业燃气轮机等部件的镍基单晶超合金，例如在高温下使用的涡轮转子叶片和定子叶片，其制造方法，以及由 这种镍基单晶超合金，更具体地说，本发明提供了一种镍基单晶超合金，主要由重量百分比为5％至10％的钴，4.7％至6％的铬，大于2.0％ 至少于3.5％的钼，7.5％至10％的钨，5％至6％的铝，0.1％至2％的钛，4％至5.5％的钽，1％至4％的铼，0.01％至0.2％的铪， 余量为镍和附带杂质，其耐高温性和耐高温腐蚀性优异，即使长时间使用也具有优异的结构稳定性。