刘传坤,任国成,徐淑波,潘悦飞

• 1:山东建筑大学材料科学与工程学院

摘要(Abstract)：

采用激光选区熔化技术制备了316L不锈钢,并对其进行了固溶及双时效处理,利用光学显微镜、X射线衍射仪、电子万能试验机和显微硬度仪等研究了316L不锈钢热处理后的组织和性能。结果表明:选区激光熔化成形的316L不锈钢试样的相邻熔池搭接紧密,搭接边界清晰,微观组织主要是生长方向各异的胞状晶;经固溶及双时效处理后,316L不锈钢的晶粒逐渐长大、熔池边界逐渐消失且边界缺陷逐渐减少,晶界处析出的M_(23)C_6导致其韧性有所降低,抗拉强度为638 MPa,屈服强度为592 MPa,伸长率为28.5%。XRD结果表明热处理没有改变316L不锈钢的元素含量且没有新相生成。

关键词(KeyWords)： 316L不锈钢;增材制造;固溶处理;双时效处理;组织性能

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(41305124);; 2019年山东省新旧动能转换重大课题攻关项目

作者(Author): 刘传坤,任国成,徐淑波,潘悦飞

DOI: 10.13289/j.issn.1009-6264.2021-0347

参考文献(References)：

• [1] Yu J M,Dao V H,Yoon K B.Effects of scanning speed on creep behaviour of 316L stainless steel produced using selective laser melting[J].Fatigue & Fracture of Engineering Materials & Structures,2020,43(10):2312-2325.
• [2] Mfusi B J,Mathe N R,Tshabalala L,et al.The effect of stress relief on the mechanical and fatigue properties of additively manufactured AlSi10Mg parts[J].Metals (Basel),2019,9(11):1216.
• [3] Platek P,Sienkiewicz J,Janiszewski J,et al.Investigations on mechanical properties of lattice structures with different values of relative density made from 316L by selective laser melting (SLM)[J].Materials,2020,13(9):2204.
• [4] 闫程程，杨立军，代文豪，等.工艺参数对激光选区熔化316L不锈钢表面质量的影响[J].热加工工艺，2017,46(20):170-174.YAN Cheng-cheng,YANG Li-jun,DAI Wen-hao,et al.Effect of process parameters on surface quality of laser selective melting 316L stainless steel[J].Hot Working Technology,2017,46(20):170-174.
• [5] 戴雨华，刘行健，李中伟，等.选择性激光熔化316L不锈钢在不同成形策略下的冲击性能研究[J].实验力学，2018,33(4):543-550.DAI Yu-hua,LIU Xing-jian,LI Zhong-wei,et al.Experimental investigation on the impact properties of 316L stainless steel specimens made by different selective laser melting forming patterns[J].Journal of Experimental Mechanice,2018,33(4):543-550.
• [6] 昝少平，焦俊科，张文武.316L不锈钢粉末激光熔覆工艺研究[J].激光与光电子学进展，2016,53(6):223-230.ZAN Shao-ping,JIAO Jun-ke,ZHANG Wen-wu.Study on laser cladding process of 316L stainless steel powder[J].Laser & Optoelectronics Progress,2016,53(6):223-230.
• [7] Sohrabpoor H,Salarvand V,Lupoi R,et al.Microstructural and mechanical evaluation of post-processed SS 316L manufactured by laser-based powder bed fusion[J].Journal of Materials Research and Technology,2021,12:210-220.
• [8] Aref Y,Nima S,Scott M T,et al.Effects of process time interval and heat treatment on the mechanical and microstructural properties of direct laser deposited 316L stainless steel[J].Materials Science and Engineering A,2015,644:171-183.
• [9] Halil K,Suleyman G.Effect of grain size and deformation temperature on mechanical properties and failure behaviour of 316L austenitic stainless steel[J].Metallofizika I Noveishie Tekhnologii,2021,43(5):673-688.
• [10] 李京赞，刘玉德，石文天，等.选区激光熔化成形和热处理工艺参数对316L钢试块的力学性能和表面质量的影响[J].上海金属，2019,41(2):18-23.LI Jing-zan,LIU Yu-de,SHI Wen-tian,et al.Effects of process parameters of both selective laser melting forming and heat treating on mechanical properties and surface quality of 316L steel test block[J].Shanghai Metals,2019,41(2):18-23.
• [11] 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.
• [12] Wen H W,Xin Y L,Lu P.Effect of linear energy density on bubble-defect of 316L stainless steel by selective laser melting[J].Key Engineering Materials,2019,4834:32-36.
• [13] Suryawanshi J,Prashanth K G,Ramamurty U.Mechanical behavior of selective laser melted 316L stainless steel[J].Materials Science and Engineering A,2017,696:113-121.
• [14] Hajnys J,Pagac M,Mesicek J,et al.Influence of scanning strategy parameters on residual stress in the SLM process according to the bridge curvature method for AISI 316L stainless steel[J].Materials,2020,13(7):1659.
• [15] Leicht A,Yu C H,Luzin V,et al.Effect of scan rotation on the microstructure development and mechanical properties of 316L parts produced by laser powder bed fusion[J].Materials Characterization,2020,163:110309.
• [16] 杨立军，郑航，李俊，等.热处理对激光选区熔化成型316L合金综合性能的影响[J].材料导报，2021,35(12):12103-12109.YANG Li-jun,ZHENG Hang,LI Jun,et al.Effect of heat treatment on comprehensive properties of selective laser melting manufacturing 316L alloy[J].Materials Reports,2021,35(12):12103-12109.
• [17] 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.HOU Dong-po,SONG Ren-bo,XIANG Jian-ying,et al.Effect of solution treatment on microstructure and properties of 316L stainless steel[J].Transactions of Materials and Heat Treatment,2010,31(12):61-65.

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