PROCESS FOR THE HEAT TREATMENT OF A NI-BASE HEAT-RESISTING ALLOY
摘要
Provided is a process for improving alloy properties which can improve the high-temperature ductility of a Ni-base heat-resisting alloy while maintaining its excellent high-temperature strength and weldability. Specifically, it relates to a process for the heat treatment of a Ni-base heat-resisting alloy having a specific composition which comprises the steps of subjecting the alloy to a first-stage solution treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy to a second-stage solution treatment temperature at a specific cooling rate; subjecting the alloy to a second-stage solution treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy rapidly to room temperature at a specific cooling rate; subjecting the alloy to a stabilizing treatment by keeping it at a specific temperature for a specific period of time; cooling the alloy rapidly to room temperature at a specific cooling rate; and subjecting the alloy to an aging treatment by keeping it at a specific temperature for a specific period of time.
申请公布号
CA2287116(C)
申请公布日期
2003.02.18
申请号
CA19992287116
申请日期
1999.10.25
申请人
MITSUBISHI STEEL MFG. CO., LTD.;MITSUBISHI HEAVY INDUSTRIES, LTD.