公开(公告)号：US3917492A

公开(公告)日：1975-11-04

申请号：US47746974

申请日：1974-06-07

Applicant: SANDVIK AB

Inventor： BACKMAN ANDERS LARS ERIK ,  FORSBERG STIG GUNNAR

IPC: C21D8/00 ,  C22C38/44 ,  C21D7/02

CPC classification number: C22C38/44 ,  C21D8/005

Abstract: Spring steel (in wire or strip form) is produced from an austenitic stainless steel, the chromium content of which is sufficient to give the steel a metastable austenitic microstructure, by (1) annealing and (2) quenching under conditions to give it a wholly austenitic condition, followed by (3) a very substantial cold reduction which transforms its structure to an at least partially martensitic structure and produces increased hardness.

Abstract translation: 弹簧钢（线或条形）由奥氏体不锈钢制成，其铬含量足以使钢具有亚稳态奥氏体组织，（1）退火和（2）在条件下淬火以使其完全 奥氏体状态，其次是（3）非常实质的冷轧，其结构转变为至少部分马氏体结构并产生增加的硬度。