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公开(公告)号：US09206497B2
公开(公告)日：2015-12-08
申请号：US13714465
申请日：2012-12-14
申请人： ATI Properties, Inc.
摘要： Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.
摘要翻译： 精炼钛合金工件的晶粒尺寸的方法包括对工件进行β退火，将β退火工件冷却至低于钛合金β转炉温度的温度，以及高应变率多轴锻造工件。 使用高应变率多轴锻造，直到在钛合金工件中达到至少为1的总应变，或者直到在钛合金工件中达到至少为1并且达到3.5的总应变为止。 工件的钛合金可以包括有效减少α相沉淀和生长动力学的颗粒钉扎合金添加剂和β稳定化成分中的至少一种。
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公开(公告)号：US20140076471A1
公开(公告)日：2014-03-20
申请号：US14028588
申请日：2013-09-17
申请人： ATI PROPERTIES, INC.
发明人： Robin M. Forbes Jones , John V. Mantione , Urban J. DeSouza , Jean-Philippe Thomas , Ramesh S. Minisandram , Richard L. Kennedy , R. Mark Davis
IPC分类号： C22F1/18
摘要： Methods of refining the grain size of titanium and titanium alloys include thermally managed high strain rate multi-axis forging. A high strain rate adiabatically heats an internal region of the workpiece during forging, and a thermal management system is used to heat an external surface region to the workpiece forging temperature, while the internal region is allowed to cool to the workpiece forging temperature. A further method includes multiple upset and draw forging titanium or a titanium alloy using a strain rate less than is used in conventional open die forging of titanium and titanium alloys. Incremental workpiece rotation and draw forging causes severe plastic deformation and grain refinement in the titanium or titanium alloy forging.
摘要翻译： 精炼钛和钛合金晶粒尺寸的方法包括热管理的高应变率多轴锻造。 高应变率在锻造期间绝热加热工件的内部区域，并且使用热管理系统将外表面区域加热到工件锻造温度，同时使内部区域冷却至工件锻造温度。 另外的方法包括使用小于用于钛和钛合金的常规开模锻造中的应变速率的多个镦锻和拉伸锻造钛或钛合金。 增加的工件旋转和拉伸锻造会导致钛或钛合金锻造中严重的塑性变形和晶粒细化。
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公开(公告)号：US09624567B2
公开(公告)日：2017-04-18
申请号：US14922750
申请日：2015-10-26
申请人： ATI Properties, Inc.
摘要： Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.
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公开(公告)号：US20160047024A1
公开(公告)日：2016-02-18
申请号：US14922750
申请日：2015-10-26
申请人： ATI Properties, Inc.
摘要： Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.
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公开(公告)号：US20130118653A1
公开(公告)日：2013-05-16
申请号：US13714465
申请日：2012-12-14
申请人： ATI Properties, Inc.
IPC分类号： C22F1/18
摘要： Methods of refining the grain size of a titanium alloy workpiece include beta annealing the workpiece, cooling the beta annealed workpiece to a temperature below the beta transus temperature of the titanium alloy, and high strain rate multi-axis forging the workpiece. High strain rate multi-axis forging is employed until a total strain of at least 1 is achieved in the titanium alloy workpiece, or until a total strain of at least 1 and up to 3.5 is achieved in the titanium alloy workpiece. The titanium alloy of the workpiece may comprise at least one of grain pinning alloying additions and beta stabilizing content effective to decrease alpha phase precipitation and growth kinetics.
摘要翻译： 精炼钛合金工件的晶粒尺寸的方法包括对工件进行β退火，将β退火工件冷却至低于钛合金β转炉温度的温度，以及高应变率多轴锻造工件。 使用高应变率多轴锻造，直到在钛合金工件中达到至少为1的总应变，或者直到在钛合金工件中达到至少为1并且达到3.5的总应变为止。 工件的钛合金可以包括有效减少α相沉淀和生长动力学的颗粒钉扎合金添加剂和β稳定化成分中的至少一种。
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