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1. 发明申请

WO1994005824A1 STRUCTURAL MEMBER AND PROCESS FOR PRODUCING THE SAME 审中-公开
标题翻译：结构构件及其制造方法
公开(公告)号：WO1994005824A1
公开(公告)日：1994-03-17
申请号：PCT/JP1993001137
申请日：1993-08-12
申请人： ZAMA, Kazuko +hm , MITSUBISHI JUKOGYO KABUSHIKI KAISHA , FUJITA, Akitsugu , KAWANO, Takayuki , NAKAMURA, Makoto , SAIKA, Fumikazu , MATSUMOTO, Tatsuki , OBA, Shinsuke , SUEOKA, Hidetoshi , KIMURA, Manabu
发明人： ZAMA, Kazuko +hm , MITSUBISHI JUKOGYO KABUSHIKI KAISHA , ZAMA, Masato +di
IPC分类号： C22C38/48
CPC分类号： C21D6/004 , C21D1/78 , C21D9/0025 , C21D9/50 , C21D2211/001 , C21D2211/008 , C22C38/48
摘要： A structural member which is composed of, on the weight basis, at most 0.07 % of carbon, at most 1 % of silicon, at most 1 % of manganese, 2.5-5 % of copper, 3-3.5 % of nickel, 14-17.5 % of chromium, at most 0.5 % of molybdenum, 0.15-0.45 % of niobium, and the balance substantially consisting of iron, and wherein an (epsilon) phase is deposited in a matrix composed of 6-30 % by volume of an austenitic phase and the rest substantially consisting of a martensitic phase. A process for producing a structural member by subjecting a stainless steel having the above composition to the first solution heat treatment at 1010 to 1050 C and then to aging at 520 to 630 C, wherein the second solution heat treatment is conducted at 730 to 840 C before aging is conducted at 520 to 630 C, or welding is conducted to give an arbitrary shape to a structural member before the second solution heat treatment is conducted. Another process for producing a structural member comprises subjecting a stainless steel having the above composition to the first solution heat treatment at 1010 to 1050 C and then to aging at 520 to 630 C, conducting welding to give an arbitrary shape to a structural member, raising the temperature at a rate of 100 C/h or below, conducting the second solution heat treatment at 1010 to 1050 C, lowering the furnace temperature to room temperature at a cooling rate of 100 C/h or below, conducting aging at 520 to 630 C, and lowering the furnace temperature to room temperature at a cooling rate of 100 C/h or below.
摘要翻译：一种结构构件，其以重量计最多为0.07％的碳，至多1％的硅，至多1％的锰，2.5-5％的铜，3-3.5％的镍，14- 17.5％的铬，至多0.5％的钼，0.15-0.45％的铌，余量基本上由铁组成，并且其中（ε）相沉积在由6-30体积％的奥氏体组成的基体中相，其余基本上由马氏体相组成。一种制造结构件的方法，该方法是使具有上述组成的不锈钢在1010-1050℃下进行第一次固溶热处理，然后在520〜630℃下老化，其中第二固溶热处理在730〜840℃ 在520〜630℃下进行老化之前，进行第二固溶热处理之前对结构件进行任意形状的焊接。用于生产结构件的另一种方法包括将具有上述组成的不锈钢经过第一次固溶热处理，在1010至1050℃下，然后在520至630℃老化，进行焊接以给结构件提供任意形状，升高温度为100℃/ h以下，在1010〜1050℃进行第二固溶热处理，以100℃/ h以下的冷却速度将炉温降至室温，在520〜630℃下进行老化并以100℃/ h以下的冷却速度将炉温降至室温。

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