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1.发明授权
公开(公告)号：US5294271A
公开(公告)日：1994-03-15
申请号：US3745
申请日：1993-01-13
CPC分类号： C21D8/0273 , C21D1/25 , C21D2211/004 , C21D2211/008 , C21D8/0236 , C21D9/02
摘要： The high-temperature relaxation resistance of spring steel is improved by providing a specified composition of the steel, and subjecting that steel composition to a controlled heat treatment. The high-temperature relaxation resistance, which can not be estimated from the mechanical properties (e.g. strength and hardness) of steel materials at an ordinary temperature, is improved by these conditions which the inventors have found out from many experiments. Especially, the temper-softening resistance is enhanced by an increase of the Si content. The density of dislocation is lowered by providing fine carbides (MO.sub.2 C) serving as inhibitors for the migration of dislocation. These are precipitated by a controlled heat treatment without reducing hardness in the tempered state. Consequently, the obtained spring steel can be used operated in a high-temperature environment for a long time without a deterioration in its properties.
摘要翻译： 通过提供钢的特定组成，并对钢组合物进行受控热处理，提高了弹簧钢的耐高温松弛性。 由常规温度下的钢材的机械性能（如强度和硬度）不能估计的耐高温松弛性得到改善，这些条件由本发明人从许多实验中发现。 特别地，通过增加Si含量来提高耐软化性。 通过提供用作位错迁移抑制剂的细小碳化物（MO2C）来降低位错密度。 这些通过受控热处理而沉淀，而不降低回火状态下的硬度。 因此，所得到的弹簧钢可以在高温环境下长时间使用而不劣化其特性。
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公开(公告)号：US4873149A
公开(公告)日：1989-10-10
申请号：US177524
申请日：1988-03-28
申请人： Kenichi Shinoda , Tomoyoshi Iwao , Tomoaki Isayama , Yuichi Higo
发明人： Kenichi Shinoda , Tomoyoshi Iwao , Tomoaki Isayama , Yuichi Higo
IPC分类号： B32B15/01
CPC分类号： B32B15/01 , Y10T428/12347 , Y10T428/12451 , Y10T428/12486
摘要： The present invention relates to a vibration-damping metal sheet.Conventional vibration-damping metal sheets such as single metal sheets of Mn-Cu base alloys, etc., and sandwich steel sheets having an intermediate plastic material had individually some disadvantages in connection with critical temperatures for use, heat resistance, weldability, conductivity and other properties.In the present invention, metal plates (1) and (2) are joined together through minute inclusions (3) permitted to be substantially uniformly present therebetween and bit thereinto and, optionally, through the diffusion of a portion of the metal plates into which the minute inclusions are bit. At another portion, the metal plates (1) and (2) only come into contact with each other. Metal or ceramic powders, or wiry or network materials may be used as the minute inclusions (3).The sheets of the present invention are best-suited for use with foundation metals of high-speed rotators or structural materials for working structures, which are often exposed to high temperatures.
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