公开(公告)号：US4439241A

公开(公告)日：1984-03-27

申请号：US353764

申请日：1982-03-01

申请人： Earle A. Ault ,  Charles E. Bevan

发明人： Earle A. Ault ,  Charles E. Bevan

IPC分类号： C11D7/06 ,  C23G1/20 ,  F01D25/00 ,  B08B3/08

CPC分类号： C11D7/06 ,  C23G1/20 ,  F01D25/002 ,  B23P2700/06

摘要： Residues accumulated during use are removed from the small interior cavities of superalloy airfoils by a process which includes exposing the interior of the part to an aqueous solution of 20-45% potassium hydroxide at a pressure of 10.4-24 kPa (150-350 psi) and temperature of 150.degree.-235.degree. C. (300.degree.-450.degree. F.) for about 20 hours, followed by water blasting using a pressure greater than about 14 MPa (2,000 psi). Unless the part is kept continuously wet between the first and second steps, the second step will not be effective.

摘要翻译： 在使用过程中累积的残余物通过包括在10.4-24kPa（150-350psi）的压力下将该部件的内部暴露于20-45％氢氧化钾的水溶液的方法从小型内部空腔中除去， 温度为150°-235℃（300°-450°F）约20小时，然后用大于约14MPa（2,000psi）的压力喷水。 除非第一和第二步骤之间的部分保持连续湿润，否则第二步将无效。

公开(公告)号：US5413648A

公开(公告)日：1995-05-09

申请号：US565999

申请日：1983-12-27

申请人： Richard W. Salkeld ,  Thomas T. Field ,  Earle A. Ault

发明人： Richard W. Salkeld ,  Thomas T. Field ,  Earle A. Ault

IPC分类号： C22F1/10 ,  C30B11/00 ,  C21D6/02

CPC分类号： C22F1/10 ,  C30B11/00 ,  C30B29/52 ,  C21D2201/04 ,  C21D2261/00

摘要： Unwanted recrystallization during heat treatment of a directionally solidified nickel alloy single crystal casting is prevented by chemical milling the part before heat treatment. Removal of a layer of as little as 0.013-0.050 mm thick, less than two percent of the part thickness, has been found effective.

摘要翻译： 在定向凝固的镍合金单晶铸件的热处理过程中，不需要的再结晶可以通过在热处理之前进行化学研磨来防止。 已经发现除去少至0.013-0.050mm厚，小于部分厚度的2％的层是有效的。

公开(公告)号：US4717432A

公开(公告)日：1988-01-05

申请号：US849938

申请日：1986-04-09

申请人： Earle A. Ault

发明人： Earle A. Ault

IPC分类号： C22F1/00 ,  C22F1/10

CPC分类号： C22F1/10

摘要： Methods for heat treating cast, nickel base superalloy articles are described. According to the invention, the articles are heated to progressively higher temperatures greater than the gamma prime solvus temperature and less than the incipient melting temperature. The incipient melting temperature is increased due to homogenization of segregate phases, while at the same time, the gamma prime goes into solution. The rate at which the temperature is increased closely approximates the rate at which the incipient melting temperature increases due to homogenization.

摘要翻译： 描述了铸造，镍基超级合金制品的热处理方法。 根据本发明，制品被加热到高于伽马质子溶质温度并小于初始熔化温度的逐渐升高的温度。 由于分离相的均匀化，初始的熔融温度升高，而同时，γ原子进入溶液。 温度升高的速率接近初始熔融温度由于均匀化而增加的速率。

公开(公告)号：US4708750A

公开(公告)日：1987-11-24

申请号：US812107

申请日：1985-12-23

申请人： Thomas T. Field ,  Thomas A. Murrin ,  Earle A. Ault

发明人： Thomas T. Field ,  Thomas A. Murrin ,  Earle A. Ault

IPC分类号： C22F1/10

CPC分类号： C22F1/10

摘要： A heat treatment is described for producing a desired microstructure in Hastelloy Alloy X components which have small diameter, closely spaced, laser pierced holes therein. The heat treatment produces a small grain size and discontinuous carbide morphology in the component prior to the hole piercing operation, which reduces the propensity for cracking which has been found to be associated with the hole piercing operation. After the piercing operation, the component is heat treated again to increase the grain size and produce a microstructure which provides the optimum balance of creep strength and fatigue strength.

摘要翻译： 描述了用于在Hastelloy合金X部件中产生期望的微结构的热处理，其在其中具有小直径，紧密间隔的激光穿孔。 在穿孔操作之前，热处理在部件中产生小的晶粒尺寸和不连续的碳化物形态，这降低了已经发现与穿孔操作相关的开裂倾向。 在穿孔操作后，再次对组件进行热处理以增加晶粒尺寸并产生微结构，从而提供蠕变强度和疲劳强度的最佳平衡。