Alloying effect of Ni and Cr on irradiated microstructural evolution of type 304 stainless steels

被引：28
作者：
Tan, L. [1 ]
Busby, J. T. [1 ]
机构：
[1] Oak Ridge Natl Lab, Oak Ridge, TN 37831 USA
来源：
JOURNAL OF NUCLEAR MATERIALS | 2013年 / 443卷 / 1-3期
关键词：
D O I：
10.1016/j.jnucmat.2013.07.054
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Life extension of the existing nuclear power plants imposes significant challenges to core structural materials that suffer increased fluences. This paper presents the microstructural evolution of a type 304 stainless steel and its variants alloyed with extra Ni and Cr under neutron irradiation at similar to 320 degrees C for up to 10.2 dpa. Similar to the reported data of type 304 variants, a large amount of Frank loops, ultrafine G-phase/M23C6 particles, and limited amount of cavities were observed in the irradiated samples. The irradiation promoted the growth of pre-existing M23C6 at grain boundaries and resulted in some phase transformation to CrC in the alloy with both extra Ni and Cr. A new type of ultrafine precipitates, possibly (Ti,Cr)N, was observed in all the samples, and its amount was increased by the irradiation. Additionally, alpha-ferrite was observed in the type 304 steel but not in the Ni or Ni + Cr alloyed variants. The effect of Ni and Cr alloying on the microstructural evolution is discussed. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码：351 / 358
页数：8
相关论文
共 22 条
[11]   EVIDENCE FOR A MECHANISM OF SWELLING VARIATION WITH COMPOSITION IN IRRADIATED FE-CR-NI ALLOYS [J].
LEE, EH ;
MANSUR, LK .
PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1985, 52 (04) :493-508
[12]  
Massoud J.P., 2005, 1011787 EPRI
[13]  
Renault A., 2009, P C ENV DEGRADATION, P1324
[14]   The Bain versus Nishiyama-Wassermann path in the martensitic transformation of Fe [J].
Sandoval, Luis ;
Urbassek, Herbert M. ;
Entel, Peter .
NEW JOURNAL OF PHYSICS, 2009, 11
[15]  
Scott P., 2003, 1002807 EPRI
[16]   Precipitation in creep resistant austenitic stainless steels [J].
Sourmail, T .
MATERIALS SCIENCE AND TECHNOLOGY, 2001, 17 (01) :1-14
[17]   Thermomechanical treatment for improved neutron irradiation resistance of austenitic alloy (Fe-21Cr-32Ni) [J].
Tan, L. ;
Busby, J. T. ;
Chichester, H. J. M. ;
Sridharan, K. ;
Allen, T. R. .
JOURNAL OF NUCLEAR MATERIALS, 2013, 437 (1-3) :70-74
[18]   FORMATION OF NACL-TYPE CR CARBIDE BY CARBON ION-IMPLANTATION [J].
WANG, J ;
CHEN, XG ;
YANG, N ;
FANG, ZZ .
APPLIED PHYSICS A-MATERIALS SCIENCE & PROCESSING, 1993, 56 (04) :307-309
[19]  
Williams D.B., 2009, Transmission Electron Microscopy: A Textbook for Materials Science, P407
[20]  
Yang Y., 2009, 14 INT C ENV DEGR MA, P1335
123