温飞娟,龙樟,李小勇,黄本生,杜建钢,陈林燕

• 1:西南石油大学新能源与材料学院
• 2:西南石油大学机电工程学院

摘要(Abstract)：

采用选区激光熔化(Selective laser melting, SLM)制备了316L不锈钢试样,并对其进行450、750和1050℃的退火处理。采用金相显微镜、扫描电镜、X射线衍射、显微硬度计、万能试验机及电化学工作站等研究了不同退火温度对316L不锈钢试样显微组织、力学性能及电化学腐蚀性能的影响。结果表明:随着退火温度的升高,SLM-316L不锈钢试样的物相没有发生改变,均为奥氏体相,但奥氏体面心立方晶格畸变增加,胞状晶与柱状晶的比例先增后减,熔池边界逐渐减少,1050℃×2 h退火后试样会发生再结晶;随着退火温度的升高,SLM-316L试样的抗拉强度和硬度均是先增加后减小,冲击吸收能量则呈现出先下降后升高的趋势,所有试样的断裂机制均为韧性断裂;退火处理会降低SLM-316L不锈钢试样的耐腐蚀性能,1050℃退火处理试样的耐腐蚀性能比450和750℃退火处理试样的耐腐蚀性能稍有提升,但其耐腐蚀性能仍低于未经热处理的试样。

关键词(KeyWords)： 316L不锈钢;选区激光熔化;退火温度

Abstract:

Keywords:

基金项目(Foundation): 2023年市校科技战略合作专项(23XNSYSX0112,23XNSYSX0092,23XNSYSX0094)

作者(Author): 温飞娟,龙樟,李小勇,黄本生,杜建钢,陈林燕

DOI: 10.13289/j.issn.1009-6264.2024-0357

参考文献(References)：

• [1]程灵钰,朱小刚,刘正武,等.热处理对激光选区熔化成形316L不锈钢组织和力学性能的影响[J].材料热处理学报,2020,41(7):80-86.CHENG Ling-yu,ZHU Xiao-gang,LIU Zheng-wu,et al. Effect of heat treatment on microstructure and mechanical properties of316L stainless steel prepared by selective laser melting[J]. Transactions of Materials and Heat Treatment,2020,41(7):80-86.
• [2] Karthikeyan S,Mohan B,Kathiresan S,et al. Effect of process parameters on machinability,hemocompatibility and surface integrity of SS 316L using R-MRAFF[J]. Journal of Materials Research and Technology,2021,15:2658-2672.
• [3]温家浩,杨中桂,丁永春,等.选区激光熔化增材制造技术研究现状与展望[J].金属加工(热加工),2023(10):14-19.WEN Jia-hao, YANG Zhong-gui, DING Yong-chun, et al. Research status and prospect of selective laser melting additive manufacturing technology[J]. MW Metal Forming,2023(10):14-19.
• [4]杨登翠.选区激光熔化316L不锈钢制备工艺、组织性能及耐蚀性研究[D].北京:北京科技大学,2023.YANG Deng-cui. Study on preparation,microstructure,property and corrosion resistance of 316L stainless steel by selective laser melting[D]. Beijing:University of Science and Technology Beijing,2023.
• [5] Bakhtiarian M,Omidvar H,Mashhuriazar A,et al. The effects of SLM process parameters on the relative density and hardness of austenitic stainless steel 316L[J]. Journal of Materials Research and Technology,2024,29:1616-1629.
• [6] Li W Q,Meng L X,Zhang Q F,et al. Melt pool evolution and microstructure simulation of SLM 316L based on SPH-PFM coupling model[J]. Journal of Materials Research and Technology,2024,28:3037-3051.
• [7] Tucho W M,Lysne V H,Austb H,et al. Investigation of effects of process parameters on microstructure and hardness of SLM manufactured SS316L[J]. Journal of Alloys and Compounds,2018,740:910-925.
• [8]吴伟辉,杨永强,毛桂生. 316L选区激光熔化增材制造熔池搭接堆积形貌分析[J].制造技术与机床,2014(4):57-60.WU Wei-hui,YANG Yong-qiang,MAO Gui-sheng. Morphology analysis of molted pools lapping and accumulation in selective laser melting of 316L stainless steel[J]. Manufacturing Technology&Machine Tool,2014(4):57-60.
• [9] Chen Y F,Wang X W,Shen J W,et al. Deformation mechanisms of selective laser melted 316L austenitic stainless steel in high temperature low cycle fatigue[J]. Materials Science and Engineering A,2022,843:143123.
• [10] Frederick C O, Armstrong P J. A mathematical representation of the multiaxial bauscinger effect[J]. Materials at High Temperatures,2007,24(1):1-26.
• [11]蒋华臻,房佳汇钰,陈启生,等.激光选区熔化成形316L不锈钢工艺、微观组织、力学性能的研究现状[J].中国激光,2022,49(14):309-329.JIANG Hua-zhen,FANG Jiahuiyu,CHEN Qi-sheng,et al. State of the art of selective laser melted 316L stainless steel:Process,microstructure,and mechanical properties[J]. Chinese Journal of Lasers,2022,49(14):309-329.
• [12] Mishra A, Chellapandi P, Suresh Kumar R, et al. Comparative study of cyclic hardening behavior of SS 316 L using time independent and dependent constitutive modeling:A simplified semi-implicit integration approach[J]. Transactions of the Indian Institute of Metals,2015,68:623-631.
• [13] Huang C,Kyvelou P,Zhang R Z,et al. Mechanical testing and microstructural analysis of wire arc additively manufactured steels[J]. Materials&Design,2022,216:110544.
• [14] Elangeswaran C,Cutolo A,Muralidharan G K,et al. Effect of post-treatments on the fatigue behaviour of 316L stainless steel manufactured by laser powder bed fusion[J]. International Journal of Fatigue,2019,123:31-39.
• [15]刘传坤,任国成,徐淑波,等.固溶及双时效处理对增材制造件组织性能的影响[J].材料热处理学报,2022,43(2):80-86.LIU Chuan-kun,REN Guo-cheng,XU Shu-bo,et al. Effect of solution and double aging treatment on microstructure and properties of 316L stainless steel prepared by selective laser melting[J]. Transactions of Materials and Heat Treatment,2022,43(2):80-86.
• [16] Salman O O,Gammer C,Chaubey A K,et al. Effect of heat treatment on microstructure and mechanical properties of 316L steel synthesized by selective laser melting[J]. Materials Science and Engineering A,2019,748:205-212.
• [17] Nder S,Saklakolu N,Sever A. Selective laser melting of Ti6Al4V alloy:Effect of post-processing on fatigue life,residual stress,microstructure,microhardness and surface roughness[J]. Materials Characterization,2023,196:112571.
• [18]边培莹.热处理工艺对316L不锈钢粉末激光选区熔化成形的残余应力及组织的影响[J].材料热处理学报,2019,40(4):90-97.BIAN Pei-ying. Effect of heat treatment on residual stress and microstructure of 316L stainless steel powder formed by selective laser melting[J]. Transactions of Materials and Heat Treatment,2019,40(4):90-97.
• [19]王磊.激光选区熔化成形316L不锈钢热处理工艺研究[D].西安:西安科技大学,2021.WANG Lei. Study on heat treatment process of 316L stainless steel formed by selective laser melting[D]. Xi’an:Xi’an University of Science and Technology,2021.
• [20] Tucho W,Cuvillier P,Sjolyst A,et al. Microstructure and hardness studies of Inconel 718 manufactured by selective laser melting before and after solution heat treatment[J]. Materials Science and Engineering A,2017,689(3):220-232.
• [21] Saeidi K,Gao X,Zhong Y,et al. Hardened austenite steel with columnar sub-grain structure formed by laser melting[J]. Materials Science and Engineering A,2015,625(2):221-229.
• [22] Suryawanshi J,Prashanth K, Ramamurty U. Mechanical behavior of selective laser melted 316L stainless steel[J]. Materials Science and Engineering A,2017,696(4):113-121.
• [23]崔西亮,尚宏坤,孙立娟,等. 3D打印316L不锈钢的力学与海水腐蚀性能研究[J].制造业自动化,2024,46(1):73-76.CUI Xi-liang,SHANG Hong-kun,SUN Li-juan,et al. Study on mechanical and corrosion properties of 316L stainless steel by 3D printing[J]. Manufacturing Automation,2024,46(1):73-76.
• [24] Sun M,Xiao K,Dong C,et al. Effect of stress on electrochemical characteristics of pre-cracked ultrahigh strength stainless steel in acid sodiumsulphate solution[J]. Corrosion Science,2014,89:137-145.
• [25] Hsieh C C,Wu W. Overview of intermetallic sigma(σ)phase precipitation in stainless steels[J]. International Scholarly Research Notices,2012,2012:1-16.

文章评论(Comment)：