Analysis of influencing factors of σ phase precipitation in2205 duplex stainless steel

doi:10.13251/j.issn.0254-6051.2021.03.036

Abstract

Abstract: Effects of aging temperature, aging time, solution temperature, Mn and Mo content on the precipitation quantity of σ phase in 2205 duplex stainless steel were analyzed. The results show that with the aging time increasing, the precipitation amount of σ phase increases. At the same aging time, the content of σ phase increases with the increase of aging temperature. The precipitation quantity of σ phase is largest when aged at 850 ℃. When the temperature exceeds 850 ℃, the quantity of the σ phase decreases with temperature increasing. Increasing the solution temperature, Cr content and Mo content can make precipitation time shorten and the precipitation quantity increase at the same aging time.

Key words: 2205 duplex stainless steel, aging treatment, σ phase, Cr content, Mo content

CLC Number:

TG156.92

Liu Yan, Gao Renqiang, Chen Xingrun, Qian Zhangxin. Analysis of influencing factors of σ phase precipitation in2205 duplex stainless steel[J]. Heat Treatment of Metals, 2021, 46(3): 180-183.

References

[1] Guo L Q,Li M,Shi X L,et al.Effect of annealing temperature on the corrosion behavior of duplex stainless steel studied by in situ techniques[J].Corrosion Science,2011,53(11):3733-3741.
[2] Lv J L,Wang Z Q.Sensitization evaluation of the AISI 2205 duplex stainless steel by the IQ value in EBSD technique[J].Engineering Failure Analysis,2019,105:65-69.
[3] Nomani J,Pramanik A,Hilditch T,et al.Machinability study of first generation duplex (2205),second generation duplex (2507) and austenite stainless steel during drilling process[J].Wear,2013,304(1/2):20-28.
[4] Liu X B,Lu W J,Zhang X F.Reconstructing the decomposed ferrite phase to achieve toughness regeneration in a duplex stainless steel[J].Acta Materialia,2020,183:51-63.
[5] Fan K,Liu F,Ma Y Z,et al.Modeling ofσ-phase precipitation in a 2205 duplex stainless steel using an analytical soft impingement treatment[J].Materials Science and Engineering A,2010,527(18/19):4550-4553.
[6] Kim S M,Kim J S,Kim K T,et al.Effect of Ce addition on secondary phase transformation and mechanical properties of 27Cr-7Ni hyper duplex stainless steels[J].Materials Science and Engineering A,2013,573:27-36.
[7] Wan J Q,Ruan H H,Wang J B,et al.The Kinetic diagram of sigma phase and its precipitation hardening effect on 15Cr-2Ni duplex stainless steel[J].Materials Science and Engineering A,2018,711:571-578.
[8] Camerini C G,Psuj G,Chady T,et al.The sigma phase evaluation in duplex stainless steel using ECT method[J].Materials Science Forum,2012,721:65-70.
[9] Sieurin H,Sandstrom R.Sigma phase precipitation in duplex stainless steel 2205[J].Materials Science and Engineering A,2007,444(1/2):271-276.
[10] 魏斌,白真权,尹成先,等.固溶处理对2205 双相不锈钢点蚀性能的影响[J].材料热处理学报,2009,30(4):73-76.
Wei Bin,Bai Zhenquan,Yin Chengxian,et al.Effects of solid solution treatment on pitting corrosion behavior of 2205 duplex stainless steel[J].Transactions of Materials and Heat Treatment,2009,30(4):73-76.
[11] 陈兴润,潘吉祥.固溶温度对2205 双相不锈钢组织和点蚀性能的影响[J].金属热处理,2014,39(12):38-42.
Chen Xingrun,Pan Jixiang.Influence of solution temperature on microstructure and pitting corrosion of 2205 duplex stainless steel[J].Heat Treatment of Metals,2014,39(12):38-42.
[12] 李殊霞,任学平,佟建国,等.2205双相不锈钢中σ相的析出规律[J].工程科学学报,2015,37(3):312-316.
Li Shuxia,Ren Xueping,Tong Jianguo,et al.Precipitation law of σ phase in 2205 duplex stainless steel[J].Chinese Journal of Engineering,2015,37(3):312-316.
[13] 杨银辉,严彪,郑鑫.双相不锈钢高温时效σ相析出行为研究进展[J].材料导报,2011,25(10):105-109.
Yang Yinhui,Yan Biao,Zheng Xin.Research development of σ phase precipitation in high temperature aging on duplex stainless steel[J].Materials Review,2011,25(10):105-109.
[14] 白于良,杨银辉,曹建春,等.Mn对22%Cr双相不锈钢700 ℃时效σ相及韧性的影响[J].材料工程,2017,45(5):71-79.
Bai Yuliang,Yang Yinhui,Cao Jianchun,et al.Effect of Mn on σ phase and toughness of 22%Cr duplex stainless steel by aging treatment at 700 ℃[J].Journal of Materials Engineering,2017,45(5):71-79.
[15] 王冬,邹德宁,韩英,等.254SMo 和2507 超级不锈钢中的σ析出相[J].材料热处理学报,2016,37(5):103-109.
Wang Dong,Zou Dening,Han Ying,et al.Precipitation of σ- phase in 254SMo and 2507 super stainless steels[J].Transactions of Materials and Heat Treatment,2016,37(5):103-109.