海水淡化泵用1.4517双相不锈钢组织及硬度研究
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摘要
1.4517双相不锈钢作为海水淡化泵的重要材料,具有优良的耐腐蚀性能。但是,在实际应用中,1.4517双相不锈钢硬度较低,受到海水的冲磨和零部件相互之间的接触摩擦的影响,海水淡化泵容易产生磨损,从而降低产品的使用寿命。本文对1.4517双相不锈钢固溶处理后的组织和硬度进行分析,研究发现:固溶处理后,试验钢组织中的σ相可以得到减少或消除,两相组织分布更加均匀,硬度有所提高,其合理的固溶处理温度为1 040~1 080℃,固溶处理后试样硬度值可以达到27.8~28.7HRC。
As an important material of seawater desalination pump, 1.4517 duplex stainless steel has excellent corro-sion resistance. However,the hardness of this material is low. The components are easy to wear during the operationprocess of seawater desalination pump and reduce the service life. By studying the effect of solution treatment onstructure and hardness of 1.4517 duplex stainless steel, the results showed that after the solution treatment, theσphase could be reduced or eliminstrd, two-phase structure was more uniform, and the hardness was inceased. Thereasonable solution treatment temperature is 1 040 ~ 1 080℃, and after the solution treatment, the hardness canreach 27.8 ~ 28.7 HRC.
As an important material of seawater desalination pump, 1.4517 duplex stainless steel has excellent corro-sion resistance. However,the hardness of this material is low. The components are easy to wear during the operationprocess of seawater desalination pump and reduce the service life. By studying the effect of solution treatment onstructure and hardness of 1.4517 duplex stainless steel, the results showed that after the solution treatment, theσphase could be reduced or eliminstrd, two-phase structure was more uniform, and the hardness was inceased. Thereasonable solution treatment temperature is 1 040 ~ 1 080℃, and after the solution treatment, the hardness canreach 27.8 ~ 28.7 HRC.
引文
[1]黄程.海水淡化泵及材料发展浅述[J].水泵技术,2010(4):34-36.
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[4]Chen TH,Yang JR.Microstructural characterization of simulated heat affected zone in a nitrogen-containing 2205 duplex stainless steel[J].Materials Science&Engineering A,2002(1-2):166-181.
[5]Sato YS,Nelson TW,Sterling CJ,et al.Microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steel[J].Materials Science&Engineering A,2005(1-2):376-384.
[6]Han Y,Zou DN,Chen ZY,et al.Investigation on hot deformation behavior of 00Cr23Ni4N duplex stainless steel under medium–high strain rates[J].Materials Characterization,2011(2):198-203.
[7]吴玖.双相不锈钢[M].北京:冶金工业出版社,1999.
[8]白景宇,吴智信,李镜银.奥氏体线解方程在1.4517铸造双相不锈钢中的应用调整[J].材料开发与应用,2012(1):5-9.
[9]贺宏,李静媛,秦丽雁,等.不同变形工艺后0Cr32Ni7Mo4N双相不锈钢的组织及性能[J].金属学报,2014(50):1-10.
[10]宋维锡.金属学[M].北京:冶金工业出版社,2007.
[2]Badji R,Bacroix B,Kahloun C,et al.Phase transformation and mechanical behavior in annealed 2205 duplex stainless steel welds[J].Materials Characterization,2008(59):447-453.
[3]Huh MJ,Kim SB,Paik W,et al.Effect of Mo substitution by W on impact property of heat affected zone in duplex stainless steel[J].Script Mater,1997(7):775-781.
[4]Chen TH,Yang JR.Microstructural characterization of simulated heat affected zone in a nitrogen-containing 2205 duplex stainless steel[J].Materials Science&Engineering A,2002(1-2):166-181.
[5]Sato YS,Nelson TW,Sterling CJ,et al.Microstructure and mechanical properties of friction stir welded SAF 2507 super duplex stainless steel[J].Materials Science&Engineering A,2005(1-2):376-384.
[6]Han Y,Zou DN,Chen ZY,et al.Investigation on hot deformation behavior of 00Cr23Ni4N duplex stainless steel under medium–high strain rates[J].Materials Characterization,2011(2):198-203.
[7]吴玖.双相不锈钢[M].北京:冶金工业出版社,1999.
[8]白景宇,吴智信,李镜银.奥氏体线解方程在1.4517铸造双相不锈钢中的应用调整[J].材料开发与应用,2012(1):5-9.
[9]贺宏,李静媛,秦丽雁,等.不同变形工艺后0Cr32Ni7Mo4N双相不锈钢的组织及性能[J].金属学报,2014(50):1-10.
[10]宋维锡.金属学[M].北京:冶金工业出版社,2007.