Effect of post weld heat treatment on the microstructure and mechanical properties of ITER-grade 316LN austenitic stainless steel weldments

被引：30
作者：
Xin, Jijun [1 ,2 ]
Fang, Chao [1 ]
Song, Yuntao [1 ]
Wei, Jing [1 ]
Xu, Shen [1 ]
Wu, Jiefeng [1 ]
机构：
[1] Chinese Acad Sci, Inst Plasma Phys, Hefei 230031, Peoples R China
[2] Univ Sci & Technol China, Hefei 230026, Peoples R China
来源：
CRYOGENICS | 2017年 / 83卷
关键词：
316LN austenitic stainless steel; Post weld heat treatment; Impact toughness; Fracture; sigma-Phase; AISI; 316L; SIGMA-PHASE; PRECIPITATION; EVOLUTION; TEMPERATURE; PREDICTION;
D O I：
10.1016/j.cryogenics.2017.02.001
中图分类号：
O414.1 [热力学];
学科分类号：
摘要：
The effect of postweld heat treatment (PWHT) on the microstructure and mechanical properties of ITERgrade 316LN austenitic stainless steel joints with ER316LMn filler material was investigated. PWHT aging was performed for 1 h at four different temperatures of 600 degrees C, 760 degrees C, 870 degrees C and 920 degrees C, respectively. The microstructure revealed the sigma phase precipitation occurred in the weld metals heat-treated at the temperature of 870 degrees C and 920 degrees C. The PWHT temperatures have the less effect on the tensile strength, and the maximum tensile strength of the joints is about 630 MPa, reaching the 95% of the base metal, whereas the elongation is enhanced with the rise of PWHT temperatures. Meanwhile, the sigma phase precipitation in the weld metals reduces the impact toughness. (C) 2017 Elsevier Ltd. All rights reserved.
引用
收藏
页码：1 / 7
页数：7
相关论文
共 16 条
  • [1] Effect of solution treatment temperature on the precipitation kinetic of σ-phase in 2205 duplex stainless steel welds
    Badji, R.
    Bouabdallah, M.
    Bacroix, B.
    Kahloun, C.
    Bettahar, K.
    Kherrouba, N.
    [J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING, 2008, 496 (1-2): : 447 - 454
  • [2] Ceyhun Kose, 2014, MATER DESIGN, V64, P221
  • [3] Mechanical design and construction qualification program on ITER correction coils structures
    Foussat, A.
    Wu Weiyue
    Jing, Wei
    Du Shuangsong
    Sgobba, S.
    Li Hongwei
    Libeyre, Paul
    Jong, Cornelis
    Klofac, Kamil
    Mitchell, Neil
    [J]. NUCLEAR ENGINEERING AND DESIGN, 2014, 269 : 116 - 124
  • [4] Overview of the ITER Correction Coils Design
    Foussat, A.
    Libeyre, P.
    Mitchell, N.
    Gribov, Y.
    Jong, C. T. J.
    Bessette, D.
    Gallix, R.
    Bauer, P.
    Sahu, A.
    [J]. IEEE TRANSACTIONS ON APPLIED SUPERCONDUCTIVITY, 2010, 20 (03) : 402 - 406
  • [5] Effect of Heat Treatment on Reversed Austenite in Cr15 Super Martensitic Stainless Steel
    Jiang Wen
    Zhao Kun-yu
    Ye Dong
    Li Jun
    Li Zhi-dong
    Su Jie
    [J]. JOURNAL OF IRON AND STEEL RESEARCH INTERNATIONAL, 2013, 20 (05) : 61 - 65
  • [6] Effect of solution annealing temperature on precipitation in 2205 duplex stainless steel
    Kashiwar, A.
    Vennela, N. Phani
    Kamath, S. L.
    Khatirkar, R. K.
    [J]. MATERIALS CHARACTERIZATION, 2012, 74 : 55 - 63
  • [7] The effect of sigma phases formation depending on Cr/Ni equivalent ratio in AISI 316L weldments
    Kim, Y. H.
    Lee, D. J.
    Byun, J. C.
    Jung, K. H.
    Kim, J. I.
    Lee, H. J.
    Shin, Y. T.
    Kim, S. H.
    Lee, H. W.
    [J]. MATERIALS & DESIGN, 2011, 32 (01) : 330 - 336
  • [8] KOZUH S., 2007, MAT GEOENVIRONMENT, V54, P331
  • [9] Preparation of the manufacture of the ITER correction coils
    Libeyre, P.
    Cormany, C.
    Dolgetta, N.
    Mitchell, N.
    Li, H.
    Wu, W.
    Du, S.
    Han, S.
    Liu, L.
    Wang, Li
    Wang, Lin
    Wei, J.
    Yu, X.
    Zhou, Z.
    Nijhuis, A.
    Sgobba, S.
    [J]. FUSION ENGINEERING AND DESIGN, 2013, 88 (9-10) : 1478 - 1481
  • [10] Conductor jacket development to meet the mechanical requirements of the ITER central solenoid coils
    Libeyre, P.
    Bessette, D.
    Devred, A.
    Jong, C.
    Mitchell, N.
    Sgobba, S.
    [J]. FUSION ENGINEERING AND DESIGN, 2011, 86 (6-8) : 1553 - 1557
12