US2016031035A1PendingUtilityA1

Method for bonding stainless steel members and stainless steel

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Assignee: NAT INST OF ADVANCED IND SCIENPriority: Sep 27, 2013Filed: Oct 13, 2015Published: Feb 4, 2016
Est. expirySep 27, 2033(~7.2 yrs left)· nominal 20-yr term from priority
Inventors:Masahito KatohTomomi Shiratori
B23K 20/021C22C 38/02C21D 2211/001C22C 38/44C21D 6/002B23K 20/023C22C 38/001C22C 38/58B23K 20/227C22C 38/002B23K 2103/05C22C 38/54C21D 2211/008C22C 38/04B23K 20/00B23K 20/02B23K 20/24B23K 2203/05
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Claims

Abstract

A method for bonding stainless steel members includes: contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting.

Claims

exact text as granted — not AI-modified
What is claimed is: 
     
         1 . A method for bonding stainless steel members comprising:
 contacting a first stainless steel member with a second stainless steel member that has a strain exceeding 50% reduction; and   heating the first and second stainless steel members to a re-crystallization initiation temperature or higher, after the contacting.   
     
     
         2 . The method for bonding stainless steel members as claimed in  claim 1 , wherein the first stainless steel member has a strain exceeding 50% reduction. 
     
     
         3 . The method for bonding stainless steel members as claimed in  claim 1 , wherein in the heating, the first stainless steel member and the second stainless steel member are heated to a temperature that is equal to the re-crystallization initiation temperature or higher and is equal to the re-crystallization initiation temperature plus 100 degrees C. or lower. 
     
     
         4 . A stainless steel which is obtained by bonding the first stainless steel member and the second stainless steel member by the method for bonding stainless steel members as claimed in  claim 1 . 
     
     
         5 . A method for bonding stainless steel members comprising:
 contacting a first austenitic stainless steel member with a second austenitic stainless steel member that contains at least 30 volume % of martensite; and   heating the first and second austenitic stainless steel members to an As temperature or higher, after the contacting.   
     
     
         6 . The method for bonding stainless steel members as claimed in  claim 5 , wherein the first austenitic stainless steel member contains at least 30 volume % of martensite. 
     
     
         7 . The method for bonding stainless steel members as claimed in  claim 5 , wherein in the heating, the first austenitic stainless steel member and the second austenitic stainless steel member are heated to a temperature that is equal to the As temperature or higher and is equal to a re-crystallization initiation temperature plus 100 degrees C. or lower. 
     
     
         8 . A stainless steel which is obtained by bonding the first austenitic stainless steel member and the second austenitic stainless steel member by the method for bonding stainless steel members as claimed in  claim 5 .

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