摘要
概要地介绍了反应堆压力容器(RPV)母材SA508-III钢的发展,针对RPV设计寿命由40年延长到60年的要求,指出快中子辐照脆化是影响RPV寿命的关键因素,并分析了材料辐照脆化的影响因素,提出了工艺上的改善措施。举例阐述了60年寿命AP1000堆芯段锻件的化学成分和机械性能的具体要求,还对锻件热加工工艺进行了总结。
Development history of the base metal SA508-III for reactor pressure vessels （RPV） is briefly introduced. Regarding the requirements to extend RPV design life from 40 years to 60 years, it is pointed out that irradiation embrittlement by fast neutrons is one of the key factors that influence PRV life. Influencing factors of material irradiation embrittlement are analyzed and technical improvement measures are put forward. Specific requirements of chemical composition and mechanical properties of the forgings at core section of a 60-year life AP1000 reactor are descried with an example. In addition, hot forging processing technologies are summarized simultaneously.
出处
《发电设备》
2012年第2期134-137,144,共5页
Power Equipment
关键词
反应堆压力容器
母材
辐照脆化
寿命
reactor pressure vessel
base metal
irradiation embrittlement
life
