| 2,866 | 87 | 91 |
| 下载次数 | 被引频次 | 阅读次数 |
采用箱式电阻炉,对316L不锈钢进行了固溶处理实验,并对其组织和力学性能进行了观察和检测。结果表明:随着固溶温度的提高,强度和硬度指标下降,伸长率迅速增加;随着保温时间的增加,其强度和硬度指标逐渐下降,伸长率在保温30 min时间内变化不大;水冷要比雾冷得到的综合力学性能优越。试样厚度为4 mm时,合理的固溶处理工艺为:1050℃保温6 min,然后水淬处理。固溶处理后试样内部组织均匀、晶粒大小适中、铁素体含量少,力学性能明显改善,抗拉强度、屈服强度分别达到565 MPa和220 MPa,伸长率为64.5%,硬度为73.1 HRB;拉伸试样断口呈现明显的韧性断裂,韧性高于热轧态产品。
Abstract：Solution treatment of 316L stainless steel was conducted by a box-type resistance furnace.Effect of the solution treatment parameter on microstructure and mechanical properties of 316L stainless steel was investigated.The results show that strength of the steel decreases and its elongation rapidly increases with increasing heating temperature.The elongation varies slightly with holding time less than 30 minutes.The mechanical properties are better for the steel with water cooling than fog cooling.The optimum solution treatment process of 316L steel is solution at 1050 ℃ for 6 minutes and then water cooling when the thickness of specimen is 4 mm.After solid solution treatment,the specimen shows homogeneous microstructure,moderate grain size,less ferrite and better mechanical properties.The values of tensile strength,yield strength,elongation and hardness are 565 MPa,220 MPa,64.5% and 73.1 HRB,respectively.The fracture of specimen presents ductile fracture,and toughness of the specimen after solution treatment is better than that of the hot-rolled products.
[1]甘俊民.316L钢及其应用[J].石油化工设备技术,1992,13(4):57-60.GAN Jun-min.Application of 316L stainless steel[J].Petro-chemical Equipment and Technology,1992,13(4):57-60.
[2]Erickson A R,Wiech R E.Metals Handbook[M].ASM Federation,1994:7.
[3]康永林.轧制工程学[M].北京:冶金工业出版社,2004:114-122.
[4]宋仁伯,项建英,侯东坡,等.316L不锈钢热加工硬化行为及机制[J].金属学报,2010,46(1):57-61.DONG Ren-bo,XIANG Jan-ying,HOU Dong-po,et al.Behavior and mechanism of hot work-harding for 316L stainless steel[J].Acta MetallurgicaSinica,2010,46(1):57-61.
[5]藤田辉夫.不锈钢的热处理[M].北京:机械工业出版社,1983:145-165.
[6]Marshall P.Austenitic Stainless Steels:Microstructure and Mechanical Properties[M].Essex:Elservier Applied Science Publishers Ltd,1984:59-60.
[7]戴晓元,夏长清,刘昌斌,等.固溶处理及时效对7xxx铝合金组织与性能的影响[J].材料热处理学报,2007,28(4):59-63.DAI Xiao-yuan,XIA Chang-qing,LIU Chang-bin,et al.Effect of solution treatment and aging process on microstructure and mechanical propertiesof 7xxx aluminium alloy[J].Transactions of Materials and Heat Treatment,2007,28(4):59-63.
[8]王岩,林琳,邵文柱,等.固溶处理对GH4169合金组织与性能的影响[J].材料热处理学报,2007,28(5):176-179.WANG Yan,LIN Lin,SHAO Wen-zhu,et al.Effect of solid-solution on microstructure and performance of GH4169 superalloy[J].Transactions ofMaterials and Heat Treatment,2007,28(5):176-179.
[9]刘小萍,田文怀,杨峰,等.时效处理SUS316L不锈钢析出相的晶体结构和化学成分[J].材料热处理学报,2007,27(3):81-85.LIU Xiao-ping,TIAN Wen-huai,YANG Feng,et al.Crystal structure and chemical composition of precipitates in an aged SUS316L stainless steel[J].Transactions of Materials and Heat Treatment,2007,27(3):81-85.
[10]丁秀平,刘雄,何燕霖,等.316L奥氏体不锈钢时效条件下析出相演变行为的研究[J].材料研究学报,2009,23(3):269-274.DING Xiu-ping,LIU Xiong,HE Yan-lin,et al.Evolution of precipitated phase during aging treatment in 316L austenitic stainless steel[J].Chinese Journal of Materials Research,2009,23(3):269-274.
[11]钟群鹏,赵子华.断口学[M].北京:高等教育出版社,2006:147-161.
[12]美国金属学会.金属手册(断口金相与断口图谱)[M].北京:机械工业出版社,1983:100-123.
基本信息:
DOI：10.13289/j.issn.1009-6264.2010.12.010
中图分类号:TG161
引用信息:
[1]侯东坡,宋仁伯,项建英等.固溶处理对316L不锈钢组织和性能的影响[J].材料热处理学报,2010,31(12):61-65.DOI:10.13289/j.issn.1009-6264.2010.12.010.
基金信息: