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| Effect of a New Heat Treatment Process on B Elements Distribution, Second Phase Precipitation and Corrosion Resistance of S31254 Super Austenitic Stainless Steel |
LIANG Chaoxiong, LIANG Xiaohong( ), HAN Peide |
| College of Materials Science and Engineering, Taiyuan University of Technology, Taiyuan 030024, China |
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Abstract Suppression of secondary phase precipitation is crucial for the improvement of hot-working character and corrosion resistance of super austenitic stainless steels (SASS). In this paper, a composite heat treatment process of dynamic solid solution treatment followed by low temperature aging was named the new heat treatment process, through which the alloying elements such as B distribution of steels can be adjusted. Hence, the effect of the new heat treatment process on the second phase precipitation and corrosion resistance of S31254 SASS was studied by means of SEM and EDS as well as CS350 electrochemical workstation. The results show that the new heat treatment process can suppress the formation of the second phase precipitation and change the distribution of alloying elements of the steel. The content of Mo in the precipitates of the sample steels 0B and 40B after treated by the new heat treatment process was much higher than those treated by the conventional solution treatment, which can result in the reduction of the total amount of precipitates and the improvement of the hot workability of the steel. The intergranular corrosion susceptibility of the sample steels treated by the new heat treatment process was evaluated by double ring potentiodynamic activation test (DL-EPR), which confirmed that the new heat treatment process can further improve the intergranular corrosion resistance of the sample steel 40B containing 0.004%B.
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Received: 12 May 2022
32134.14.1005.4537.2022.148
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| Fund: National Natural Science Foundation of China(51871159) |
Corresponding Authors:
LIANG Xiaohong, E-mail: xhliang1983@163.com
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| 1 |
Zhang S C, Li H B, Jiang Z H, et al. Chloride- and sulphate-induced hot corrosion mechanism of super austenitic stainless steel S31254 under dry gas environment [J]. Corros. Sci., 2020, 163: 108295
doi: 10.1016/j.corsci.2019.108295
|
| 2 |
Yi P, Hou L F, Du H Y, et al. NaCl induced corrosion of three austenitic stainless steels at high temperature [J]. J. Chin. Soc. Corros. Prot., 2022, 42: 288
|
|
伊 璞, 侯利锋, 杜华云 等. 新型奥氏体不锈钢高温NaCl腐蚀行为研究 [J]. 中国腐蚀与防护学报, 2022, 42: 288
|
| 3 |
Marin R, Combeau H, Zollinger J, et al. σ-phase formation in super austenitic stainless steel during directional solidification and subsequent phase transformations [J]. Metall. Mater. Trans., 2020, 51A: 3526
|
| 4 |
Liu G W, Ying H, Shi Z Q, et al. Hot deformation and optimization of process parameters of an as-cast 6Mo superaustenitic stainless steel: a study with processing map [J]. Mater. Des., 2014, 53: 662
doi: 10.1016/j.matdes.2013.07.065
|
| 5 |
Koutsoukis T, Redjaïmia A, Fourlaris G. Phase transformations and mechanical properties in heat treated superaustenitic stainless steels [J]. Mater. Sci. Eng., 2013, 561A: 477
|
| 6 |
Hao Y S, Cao G M, Li C G, et al. The aging precipitation behavior of 20Cr-24Ni-6Mo super-austenitic stainless steel processed by conventional casting and twin-roll strip casting [J]. Mater. Charact., 2019, 147: 21
doi: 10.1016/j.matchar.2018.10.015
|
| 7 |
Zhang S C, Li H B, Jiang Z H, et al. Effects of Cr and Mo on precipitation behavior and associated intergranular corrosion susceptibility of superaustenitic stainless steel S32654 [J]. Mater. Charact., 2019, 152: 141
doi: 10.1016/j.matchar.2019.04.010
|
| 8 |
Heino S. Role of Mo and W during sensitization of superaustenitic stainless steel—crystallography and composition of precipitates [J]. Metall. Mater. Trans., 2000, 31A: 1893
|
| 9 |
Liao L H, Li J Y, Zhao Z X, et al. Precipitation and phase transformation behavior during high-temperature aging of a cobalt modified Fe-24Cr-(22-x)Ni-7Mo-xCo superaustenitic stainless steel [J]. J. Mater. Sci., 2022, 57: 4771
doi: 10.1007/s10853-021-06740-1
|
| 10 |
Wang Q, Wang L J, Sun Y H, et al. The influence of Ce micro-alloying on the precipitation of intermetallic sigma phase during solidification of super-austenitic stainless steels [J]. J. Alloy. Compd., 2020, 815: 152418
doi: 10.1016/j.jallcom.2019.152418
|
| 11 |
Sharma M, Ortlepp I, Bleck W. Boron in heat‐treatable steels: a review [J]. Steel Res. Int., 2019, 90: 1900133
doi: 10.1002/srin.v90.11
|
| 12 |
Hu B, Trotter G, Wang Z W, et al. Effect of boron and carbon addition on microstructure and mechanical properties of the aged gamma-prime strengthened alumina-forming austenitic alloys [J]. Intermetallics, 2017, 90: 36
doi: 10.1016/j.intermet.2017.06.011
|
| 13 |
Jeong E H, Park S G, Kim S H, et al. Evaluation of the effect of B and N on the microstructure of 9Cr-2W steel during an aging treatment for SFR fuel cladding tubes [J]. J. Nucl. Mater., 2015, 467: 527
doi: 10.1016/j.jnucmat.2015.09.026
|
| 14 |
Wang J, Cui Y S, Bai J G, et al. The Mechanism on the B addition to regulate phase precipitation and improve intergranular corrosion resistance in UNS S31254 superaustenitic stainless steels [J]. J. Electrochem. Soc., 2019, 166: C600
doi: 10.1149/2.1361915jes
|
| 15 |
Bai J G, Cui Y S, Wang J, et al. Effect of compression deformation on precipitation phase behavior of B-containing S31254 super austenitic stainless steel [J]. J. Iron Steel Res. Int., 2019, 26: 712
doi: 10.1007/s42243-018-0194-0
|
| 16 |
Yu J T, Zhang S C, Li H B, et al. Influence mechanism of boron segregation on the microstructure evolution and hot ductility of super austenitic stainless steel S32654 [J]. J. Mater. Sci. Technol., 2022, 112: 184
doi: 10.1016/j.jmst.2021.11.005
|
| 17 |
Kurban M, Erb U, Aust K T. A grain boundary characterization study of boron segregation and carbide precipitation in alloy 304 austenitic stainless steel [J]. Scr. Mater., 2006, 54: 1053
doi: 10.1016/j.scriptamat.2005.11.055
|
| 18 |
Zhang Y Q, Gu J F, Han L Z. Elemental redistribution and precipitation reactions of 9Cr1.5Mo1CoB(FB2) steel during tempering [J]. Mater. Charact., 2021, 171: 110778
doi: 10.1016/j.matchar.2020.110778
|
| 19 |
Mandal S, Kishore V, Bose M, et al. In vitro and in vivo degradability, biocompatibility and antimicrobial characteristics of Cu added iron-manganese alloy [J]. J. Mater. Sci. Technol., 2021, 84: 159
doi: 10.1016/j.jmst.2020.12.029
|
| 20 |
Han J, Zhu Z X, Wei G, et al. Microstructure and mechanical properties of Nb- and Nb+ Ti-Stabilised 18CrMo Ferritic stainless steels [J]. Acta Metall. Sin. (Engl. Lett.), 2020, 33: 716
doi: 10.1007/s40195-019-00988-y
|
| 21 |
Jin W S, Lang Y P, Rong F, et al. Research of EPR on the susceptibility to intergranular attack of austenitic stainless steel [J]. J. Chin. Soc. Corros. Prot., 2007, 27: 54
|
|
金维松, 郎宇平, 荣 凡 等. EPR法评价奥氏体不锈钢晶间腐蚀敏感性的研究 [J]. 中国腐蚀与防护学报, 2007, 27: 54
|
| 22 |
Li H, Xia S, Liu W Q, et al. Atomic scale study of grain boundary segregation before carbide nucleation in Ni-Cr-Fe Alloys [J]. J. Nucl. Mater., 2013, 439: 57
doi: 10.1016/j.jnucmat.2013.03.067
|
| 23 |
Blavette D, Duval P, Letellier L, et al. Atomic-scale APFIM and TEM investigation of grain boundary microchemistry in Astroloy nickel base superalloys [J]. Acta Mater., 1996, 44: 4995
doi: 10.1016/S1359-6454(96)00087-0
|
| 24 |
Cadel E, Lemarchand D, Chambreland S, et al. Atom probe tomography investigation of the microstructure of superalloys N18 [J]. Acta Mater., 2002, 50: 957
doi: 10.1016/S1359-6454(01)00395-0
|
| 25 |
Hu C L, Xia S, Li H, et al. Improving the intergranular corrosion resistance of 304 stainless steel by grain boundary network control [J]. Corros. Sci., 2011, 53: 1880
doi: 10.1016/j.corsci.2011.02.005
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