公开(公告)号：US20120251330A1

公开(公告)日：2012-10-04

申请号：US13077475

申请日：2011-03-31

申请人： Akane Suzuki ,  Stephen Francis Rutkowski ,  Michael Francis Xavier Gigliotti, JR.

发明人： Akane Suzuki ,  Stephen Francis Rutkowski ,  Michael Francis Xavier Gigliotti, JR.

IPC分类号： F01D5/14 ,  B22D25/02 ,  B22D27/04

CPC分类号： F01D5/147 ,  B22D27/045 ,  B33Y80/00 ,  F05D2300/606 ,  F05D2300/607 ,  F05D2300/609 ,  Y10T29/49336

摘要： A component such as a turbine bucket or blade, and method for making the component, are presented. One embodiment is an article that comprises an airfoil casting portion comprising a plurality of integral regions, wherein the plurality of integral regions comprises a single-crystalline region and a columnar-grained region. Another embodiment is a method for fabricating an article. The method comprises providing a quantity of molten metal; providing a mold defining an airfoil portion having an axial direction and a transverse direction, wherein the airfoil portion of the mold comprises a single-crystal growth region and a columnar growth region disposed along the transverse direction from the single crystal growth region; introducing the molten metal into the mold; and solidifying the metal such that a solidification front progresses in the axial direction to produce an airfoil casting portion comprising a single-crystalline region and a columnar-grained region.

摘要翻译： 提出了诸如涡轮机桶或叶片的部件以及用于制造部件的方法。 一个实施例是一种制品，其包括包括多个整体区域的翼型铸造部分，其中所述多个整体区域包括单晶区域和柱状晶粒区域。 另一实施例是用于制造制品的方法。 该方法包括提供一定数量的熔融金属; 提供限定具有轴向方向和横向方向的翼型部的模具，其中所述模具的翼型部分包括单晶生长区域和沿着横向从单晶生长区域设置的柱状生长区域; 将熔融金属引入模具中; 并使金属固化，使得固化前沿轴向前进，以制造包括单晶区域和柱状晶粒区域的翼型铸造部分。

公开(公告)号：US20110076182A1

公开(公告)日：2011-03-31

申请号：US12571013

申请日：2009-09-30

申请人： Akane Suzuki ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

发明人： Akane Suzuki ,  Michael Francis Xavier Gigliotti, JR. ,  Shyh-Chin Huang ,  Pazhayannur Ramanathan Subramanian

IPC分类号： C22C19/05 ,  B22D27/04

CPC分类号： C22C19/057

摘要： Rhenium-free nickel based alloys are provided. More particularly, the alloys comprise preferred levels and ratios of elements so as to achieve good high temperature strength of both gamma matrix phase and gamma prime precipitates, as well as good environmental resistance, without using rhenium. When cast and directionally solidified into single crystal form, the alloys exhibit creep resistance substantially equivalent to rhenium-bearing single-crystal alloys. Further, the alloys can be processed by directional solidification into articles in single crystal form or columnar structure comprising fine dendrite arm spacing, e.g., less than 400 μm, if need be, so that further improvements in mechanical properties in the articles can be seen.

摘要翻译： 提供无铼镍基合金。 更具体地，合金包括优选的含量和元素比例，以便在不使用铼的情况下实现γ基质相和γ初始沉淀物的良好的高温强度以及良好的耐环境性。 当铸造和定向凝固成单晶形式时，合金具有基本上等同于含铼单晶合金的抗蠕变性。 此外，如果需要，合金可以通过定向固化加工成单晶形状或柱状结构的制品，包括细小的枝晶臂间距，例如小于400μm，从而可以看到制品中机械性能的进一步改善。

公开(公告)号：US20100170654A1

公开(公告)日：2010-07-08

申请号：US12348937

申请日：2009-01-06

申请人： Shyh-Chin Huang ,  Andrew John Elliott ,  Michael Francis Xavier Gigliotti, JR. ,  Roger John Petterson ,  Stephen Francis Rutkowski

发明人： Shyh-Chin Huang ,  Andrew John Elliott ,  Michael Francis Xavier Gigliotti, JR. ,  Roger John Petterson ,  Stephen Francis Rutkowski

IPC分类号： B22D27/04 ,  B29C33/60

CPC分类号： B22D27/045 ,  B22C9/04 ,  C30B11/002

摘要： Casting molds suitable for directional solidification processes using a liquid cooling bath include a graded facecoat structure on a mold body. The graded facecoat structure includes an innermost layer and a delamination layer, wherein the delamination layer fractures upon cooling of the molten metal so as to separate the mold body from the innermost layer, which remains in contact with or in close proximity to the metal being cast. Also disclosed are directional solidification processes.

摘要翻译： 适用于使用液体冷却浴的定向凝固方法的铸模包括在模体上的分级面涂层结构。 分级面涂层结构包括最内层和分层，其中分层在熔融金属冷却时破裂，从而将模具体与最内层分开，其保持与正在铸造的金属接触或非常接近 。 还公开了定向凝固方法。