SCWR候选不锈钢的蠕变性能研究

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Study on Creep Property of Candidate Stainless Steels for SCWR

Science and Technology On Reactor Fuel and Materials Laboratory, Nuclear Power Institute of China, Chengdu, 610041

摘要: 采用RDL50型蠕变持久试验机研究奥氏体不锈钢316Ti、347、HR3C和6XN在550℃/90 MPa、600℃/85 MPa、650℃/70 MPa和700℃/65 MPa条件下的蠕变性能。结果表明,在550℃/90 MPa条件下,347的蠕变性能最佳,但随着温度的提高,600℃以上HR3C的蠕变性能优势逐渐体现;316Ti在4种条件下的蠕变性能均最差。结合实验数据分析,应力指数n排序为316Ti>347>HR3C,激活能Q排序为HR3C>347>316Ti,进一步表明了上述3种材料蠕变性能的优劣为HR3C>347>316Ti。
- 超临界水冷堆 /
- 蠕变 /
- 奥氏体不锈钢
Abstract: The creep property of four austenitic stainless steels（316Ti,347,HR3C and 6XN） was investigated with test machine under four conditions: 550℃/90 MPa,600℃/85 MPa,650℃/70 MPa and 700℃/65 MPa.347 showed the best creep property under the 550℃/90 MPa condition while HR3C gradually got the upper hand above 600℃.316Ti displays the worst creep property under all the test conditions.Based on the test data analysis,the stress index followed an order of 316Ti ＞ 347 ＞ HR3C and the activation energy HR3C ＞ 347 ＞316Ti,which suggests the creep property order as HR3C ＞ 347 ＞316Ti.
- Supercritical water cooled reactor（SCWR） /
- Creep /
- Austenitic stainless steel