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700 ℃先进超超临界汽轮机转子用617合金锻造工艺研究
英文标题:Investigation on the hot forging process of alloy 617 A-USC steam turbine rotors at 700 ℃
作者:朱怀沈 聂义宏 白亚冠 曹志远 李萌蘖 姜萍 
单位:中国第一重型机械股份公司 天津重型装备工程研究有限公司 
关键词:先进超超临界  镍基617合金 锻造工艺 动态再结晶 力学性能 
分类号:TG316
出版年,卷(期):页码:2016,41(9):7-12
摘要:

 

 
先进超超临界汽轮机转子用617合金变形抗力大且无法通过锻后热处理达到细化晶粒,因此要生产满足产品
 
性能要求的锻件就需要合理的锻造工艺参数。通过对617合金的锻造工艺性能、动态再结晶以及晶粒长大趋
 
势等进行试验研究,确定了617合金锻造的始锻温度为1180~1200 ℃、终锻温度为950~1000 ℃。根据所确定
 
的工艺方案成功地进行了617合金电渣重熔铸锭的水压机锻造试制,试制锻件表面无裂纹、内部组织均匀,
 
各项力学性能检测结果均符合产品技术要求,验证了617合金锻造工艺参数的有效性。
 

 A-USC steam turbine rotor made of alloy 617 is produced, and its forging grain size cannot be 

 
refined by heat treatment because of the large distortion resistance. Therefore, reasonable 
 
forging process parameters must be obtained in order to meet the inherence quality requirement 
 
of the forgings. The initial forging temperature 1180-1200 ℃ and the final forging 
 
temperature 950-1000 ℃of alloy 617 were confirmed by experimental study of forging 
 
performance, dynamic recrystallization and grain growth behavior for alloy 617. Based on the 
 
above process, the ESR ingot of alloy 617 was successfully forged by hydraulic press without 
 
crack on the surface and with a uniform internal structure. Its forging mechanics capability 
 
can fully meet the requirement, and the effectiveness of forging parameters is verified.
基金项目:
国家能源应用技术研究及工程示范项目(NY20150101-1)
作者简介:
朱怀沈(1985-),男,硕士,工程师
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