公开(公告)号：US5653828A

公开(公告)日：1997-08-05

申请号：US548917

申请日：1995-10-26

申请人： Linruo Zhao ,  Peter Au ,  Jonathan C. Beddoes ,  William Wallace

发明人： Linruo Zhao ,  Peter Au ,  Jonathan C. Beddoes ,  William Wallace

IPC分类号： C22F1/18

CPC分类号： C22F1/183

摘要： A method for producing fine-grained lamellar microstructures in powder metallurgy (P/M) and wrought gamma titanium aluminides comprises the steps of: (a) a cyclic heat treatment at a maximum temperature in the range of about 10.degree. C. above to about 10.degree. C. below the alpha-transus temperature (T.sub..alpha.) of the alloy, and (b) a secondary heat treatment of thus cyclically heat treated alloy at a temperature between 750.degree. C. and 1050.degree. C. for 4 to 100 hours. For cast gamma alloys, the method comprises additionally the step of a solution treatment at a temperature in the range of about 30.degree. C. to 70.degree. C. above T.sub..alpha. followed by a water or an oil quench before the two steps described above. The alloys with the resulting fine-grained lamellar microstructure have an advantageous combination of mechanical properties--tensile strength, ductility, fracture toughness, and creep resistance.

摘要翻译： 用于生产粉末冶金（P / M）和锻造γ钛铝化物中的细粒层状微结构的方法包括以下步骤：（a）在约10℃至约约10℃范围内的最高温度下进行循环热处理 在合金的α-转变温度（Tα）以下10℃，（b）在750℃〜1050℃的温度下对循环热处理合金进行二次热处理4〜100小时 。 对于铸造γ合金，该方法另外包括在高于Tα的约30℃至70℃的温度下进行固溶处理的步骤，然后在上述两个步骤之前进行水或油淬火。 具有所得细粒层状微结构的合金具有机械性能 - 拉伸强度，延展性，断裂韧性和抗蠕变性的有利组合。

公开(公告)号：US20100119819A1

公开(公告)日：2010-05-13

申请号：US12593898

申请日：2008-03-31

申请人： John R. Rodgers ,  Qi Yang ,  Linruo Zhao

发明人： John R. Rodgers ,  Qi Yang ,  Linruo Zhao

IPC分类号： B32B18/00 ,  C23C30/00 ,  C23C14/16

CPC分类号： B64G1/226 ,  B82Y30/00 ,  C23C14/0641 ,  C23C28/044 ,  C23C28/42 ,  C23C30/005 ,  F02C7/045 ,  F02K1/44 ,  Y10T428/26 ,  Y10T428/263

摘要： A nanolayered coating, having a thickness of less than 100 nm, comprising nanolayers of: (i) TiN; and (ii) CrN, MoN, AlN, or AlN and CrN. The coating has an erosion rate, according to ASTM G76, at a particle velocity of 60 m/s and an impingement angle of 90°, of no greater than 4.0×10−3 mm3/g. Also provided is a monolithic TiAlN coating. Such coatings may be useful for erosion protection of aircraft or gas turbine components; or wear protection of gears, cutting tools including machine cutting tools and surgical cutting tools, or other metallic surfaces.

摘要翻译： 具有小于100nm的厚度的纳米涂层包括以下的纳米层：（i）TiN; 和（ii）CrN，MoN，AlN或AlN和CrN。 根据ASTM G76，涂层具有60m / s的粒子速度和90°的冲击角不大于4.0×10-3mm 3 / g的侵蚀速率。 还提供了一种单片TiAlN涂层。 这种涂层可用于飞机或燃气轮机部件的侵蚀保护; 或磨损保护齿轮，切割工具，包括机床切割工具和手术切割工具，或其他金属表面。