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1. 发明申请

US20030098099A1 Alpha-beta type titanium alloy 有权
标题翻译： Alpha-β型钛合金
公开(公告)号：US20030098099A1
公开(公告)日：2003-05-29
申请号：US10256709
申请日：2002-09-30
申请人： KABUSHIKI KAISHA KOBE SEIKO SHO (KOBE STEEL, LTD,)
发明人： Soichiro Kojima , Hideto Oyama
IPC分类号： C22C016/00 , C22C027/00
CPC分类号： C22C14/00 , C22F1/183
摘要： There is provided an null-null type titanium alloy having a normal-temperature strength equivalent to, or exceeding that of a Ti-6Al-4V alloy generally used as a high-strength titanium alloy, and excellent in hot workability including hot forgeability and subsequent secondary workability, and capable of being hot-worked into a desired shape at a low cost efficiently. There is disclosed an null-null type titanium alloy having high strength and excellent hot workability wherein 0.08-0.25% C is contained, the tensile strength at room temperature (25null C.) after annealing at 700null C. is 895 MPa or more, the flow stress upon greeble test at 850null C. is 200 MPa or less, and the tensile strength/flow stress ratio is 9 or more. A particularly preferred null-null type titanium alloy comprises 3-7% Al and 0.08-025% C as null-stabilizers, and 2.0-6.0% Cr and 0.3-1.0% Fe as null-stabilizers.
摘要翻译：提供了具有等于或超过通常用作高强度钛合金的Ti-6Al-4V合金的常温强度的α-β型钛合金，并且具有优异的热加工性，包括热锻性和随后的二次加工性，并且能够以低成本有效地热加工成所需形状。公开了具有高强度和优异的热加工性的α-β型钛合金，其中含有0.08-0.25％C，在700℃退火后的室温（25℃）下的拉伸强度为895MPa以上在850℃下的高温试验时的流动应力为200MPa以下，拉伸强度/流动应力比为9以上。特别优选的α-β型钛合金包含3-7％Al和0.08-025％C作为α-稳定剂，和2.0-6.0％Cr和0.3-1.0％Fe作为β稳定剂。

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