纳米压痕技术研究堆内构件材料304NG不锈钢的三束辐照效应
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摘要
在中国原子能科学研究院的三束辐照实验平台上,对国产堆内构件材料核级控氮304NG不锈钢进行重离子、氢和氦同时辐照,并采用连续刚度纳米压痕技术测量了辐照前后样品的硬度和弹性模量的变化。结果表明,6dpa下,随着辐照温度的升高,辐照硬化减弱;300℃下,随着辐照剂量的增加,辐照硬化增大,高剂量情况下,氢、氦注入区的辐照硬化更显著,表明存在氢、氦增强硬化效应。
Utilizing the heavy ion,hydrogen and helium triple beam irradiation experiment platform at China Institute of Atomic Energy,the irradiation experiments for the domestic nuclear grade 304 NG stainless steel which is a kind of nuclear reactor internal materials were carried out with different doses and different temperatures.The hardness and elastic modulus of the samples before and after irradiation were measured by nanoindentation with continuous stiffness measurement technique.The results show that under 6 dpa,with the increase of irradiation temperature,the irradiation hardening becomes weakened.Under 300 ℃ ,the irradiation hardening increases with the irradiation dose.After withstanding higher irradiation dose,the irradiation hardening of hydrogen and helium injected range is more significant,indicating the hydrogen and helium enhance hardening effect.
Utilizing the heavy ion,hydrogen and helium triple beam irradiation experiment platform at China Institute of Atomic Energy,the irradiation experiments for the domestic nuclear grade 304 NG stainless steel which is a kind of nuclear reactor internal materials were carried out with different doses and different temperatures.The hardness and elastic modulus of the samples before and after irradiation were measured by nanoindentation with continuous stiffness measurement technique.The results show that under 6 dpa,with the increase of irradiation temperature,the irradiation hardening becomes weakened.Under 300 ℃ ,the irradiation hardening increases with the irradiation dose.After withstanding higher irradiation dose,the irradiation hardening of hydrogen and helium injected range is more significant,indicating the hydrogen and helium enhance hardening effect.
引文
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[2]文燕,赖旭平,段远刚,等.国产304NG控氮不锈钢应用性能研究[J].核动力工程,2007,28(增刊):40-43.WEN Yan,LAI Xuping,DUAN Yuangang,et al.Research on application performance of nitrogen-containing stainless steel 304NG made in China[J].Nuclear Power Engineering,2007,28(Suppl.):40-43(in Chinese).
[3]朱发文,张乐福,唐睿,等.奥氏体304NG不锈钢在550℃/25 MPa超临界水中的腐蚀行为[J].原子能科学技术,2009,43(6):518-522.ZHU Fawen,ZHANG Lefu,TANG Rui,et al.Corrosion behavior of austenitic 304NG stainless steel in supercritical water at 550℃/25MPa[J].Atomic Energy Science and Technology,2009,43(6):518-522(in Chinese).
[4]鲍一晨,张乐福,朱发文,等.304NG在超临界水中的腐蚀增重随温度的异常关系[J].原子能科学技术,2010,44(9):1 093-1 098.BAO Yichen,ZHANG Lefu,ZHU Fawen,et al.Abnormal weight gain behavior of 304NG stainless steel in supercritical water[J].Atomic Energy Science and Technology,2010,44(9):1 093-1 098(in Chinese).
[5]LEWIS M B,ALLEN W R,BUHL R A,et al.Triple ion beam irradiation facility[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,1989,43(2):243-253.
[6]SERRUYS Y,RUAULT M O,TROCELLIER P,et al.Multiple ion beam irradiation and implantation:JANNUS project[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,2005,240(1-2):124-127.
[7]HAMADA S,MIWA Y,YAMAKI D,et al.Development of a triple beam irradiation facility[J].Journal of Nuclear Materials,1998,258-263(1):383-387.
[8]YUAN Daqing,ZHENG Yongnan,ZUO Yi,et al.Synergistic effect of triple ion beams on radiation damage in CLAM steel[J].Chinese Physics Letters,2014,31:046101.
[9]ZIEGLER J F.SRIM:The stopping and range of ions in matter[CP/OL].(2013)[2015-03-02].http:∥www.srim.org.
[10]STOLLER R E,TOLOCZKO M B,WAS G S,et al.On the use of SRIM for computing radiation damage exposure[J].Nuclear Instruments and Methods in Physics Research Section B:Beam Interactions with Materials and Atoms,2013,310:75-80.
[11]OLIVER W C,PHARR G M.An improved technique for determining hardness and elastic modulus using load and displacement sensing indentation experiments[J].Journal of Materials Research,1992,7(6):1 564-1 583.
[12]OLIVER W C,PHARR G M.Measurement of hardness and elastic modulus by instrumented indentation:Advances in understanding and refinements to methodology[J].Journal of Materials Research,2004,19:3-20.
[13]LI X,BHUSHAN B.A review of nanoindentation continuous stiffness measurement technique and its applications[J].Materials Characterization,2002,48(1):11-36.