Influence of laser shock peening on microstructure and oxidation resistance of laser additive manufactured TC4 titanium alloy
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摘要: 近年来，激光增材制造技术（3D打印）成为科学研究及工业应用领域的热点。为了研究激光冲击强化对增材制造TC4钛合金性能的影响，本文采用能量为5 J，波长为1 064 nm，脉宽为10 ns，光斑直径为3 mm的脉冲激光对3D打印TC4钛合金进行激光冲击强化，分析了激光冲击强化前后材料的显微硬度、显微组织、残余应力以及高温氧化性能。结果表明，经过激光冲击强化后，材料的显微硬度比激光冲击强化前提高了8%，影响层深度达到0.4 mm，强化区域的晶粒得到细化，位错增多，并产生形变孪晶；激光冲击强化的残余压应力数值高达472 MPa，材料的高温抗氧化性能也得到改善。Abstract: In recent years, laser additive manufacturing(also called 3D printing) has become the focus of scientific research and industrial applications. In order to study the impact of laser shock peening(LSP) on the properties of laser additive manufactured Ti-6Al-4V alloy, a TC4 titanium alloy prepared by 3D printing was carried out LSP by using Nd:YAG laser with energy of 5 J, wavelength of 1 064 nm, pulse width of 10 ns and spot diameter of 3 mm, and the micro-hardness, microstructure, residual stress and high temperature oxidation performance of the material before and after LSP were analyzed. The results show that by comparing with the TC4 titanium alloy before LSP, the micro-hardness of that after LSP increases by 8%, and the depth of the impact layer reaches 0.4 mm, the grains in the strengthened region are refined, the dislocation is increased and the deformation twins are produced. The residual compressive stress of laser shock peening is as high as 472 MPa, and the high temperature oxidation resistance of the material is also improved.
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图 3 激光冲击强化前后的光镜组织图
Figure 3. Optical microscopy observation results of the samples before and after LSP
图 5 激光冲击强化前后透射组织图(a、b：激光冲击强化前c、d：激光冲击强化后)
Figure 5. TEM of the samples before and after LSP(a、b:before LSP c、d:after LSP)
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[1] ZHEREBTSOV S V, DYAKONOV G S, SALEM A A, et al.. Formation of nanostructures in commercial-purity titanium via cryorolling[J]. Acta Mater, 2013, 61(4):1167-1178. doi: 10.1016/j.actamat.2012.10.026 [2] REN X D, ZHOU W F, LIU F F, et al.. Microstructure evolution and grain refinement of Ti-6Al-4V alloy by laser shock processing[J]. Applied Surface Science, 2016, 363:44-49. doi: 10.1016/j.apsusc.2015.11.192 [3] ROZMUS-G RNIKOWSKA M. Surface modifications of a Ti-6Al-4V alloy by a laser shock processing[J]. Acta Physica Polonica A, 2010, 117:808-811. doi: 10.12693/APhysPolA.117.808 [4] 孙兵兵, 张学军, 郭绍庆, 等.金属材料激光快速成形的研究进展[J].电焊机, 2013, 43(5):79-84. http://d.wanfangdata.com.cn/Periodical_dhj201305015.aspxSUN B B, ZHANG X J, GUO S Q, et al.. Resarch development on the laser rapid prototyping of metal material[J]. Electric Welding Machine, 2013, 43(5):79-84.(in Chinese) http://d.wanfangdata.com.cn/Periodical_dhj201305015.aspx [5] 邹涛, 张敏, 陈长军, 等.激光增材制造(3D打印)制备钛合金的微观组织研究[J].应用激光, 2016, 36(3):286-290. http://kns.cnki.net/KCMS/detail/detail.aspx?filename=yyjg201603009&dbname=CJFD&dbcode=CJFQZOU T, ZHANG M, CHEN CH J, et al.. Study on the microstructure of Ti-6Al-4V alloy prepared by laser additive manufacturing(3D printing)[J]. Applied Laser, 2016, 36(3):286-290.(in Chinese) http://kns.cnki.net/KCMS/detail/detail.aspx?filename=yyjg201603009&dbname=CJFD&dbcode=CJFQ [6] LI P, WARNER D H, FATEMI A, et al.. Critical assessment of the fatigue performance of additively manufactured Ti-6Al-4V and perspective for future research[J]. International Journal of Fatigure, 2016, 85:130-143. doi: 10.1016/j.ijfatigue.2015.12.003 [7] 张霜银, 林鑫, 陈静.工艺参数对激光快速成形TC4钛合金组织及成形质量的影响[J].稀有金属材料与工程, 2007, 36(10):1839-1843. doi: 10.3321/j.issn:1002-185x.2007.10.033ZHANG SH Y, LIN X, CHEN J. Influence of processing parameter on the microstructure and forming characterizations of Ti-6Al-4V titanium alloy after laser rapid forming processing[J]. Rare Metal Materials and Engineering, 2007, 36(10):1839-1843.(in Chinese) doi: 10.3321/j.issn:1002-185x.2007.10.033 [8] HUANG W, GARBATOV Y, GUEDESSOARES C. Fatigue reliability assessment of a complex welded structure subjected to multiple cracks[J]. Engineering Structures, 2013, 56:868-879. doi: 10.1016/j.engstruct.2013.06.011 [9] 阮雪茜, 林鑫, 黄春平, 等.TC4合金激光立体成形孔洞类缺陷的超声检测[J].中国激光, 2015, 42(12):1-8. http://www.opticsjournal.net/Articles/abstract?aid=OJ151208000064IfLiOkRUANX QN, LIN X, HUANG CH P. Ultrasonic nondestructive testing of hole type defects in laser solid forming TC4 alloy[J]. Chinese Journal of Lasers, 2015, 42(12):1-8.(in Chinese) http://www.opticsjournal.net/Articles/abstract?aid=OJ151208000064IfLiOk [10] 张永康, 葛涛, 鲁金忠.发动机飞锤危险截面激光冲击强化试验[J].江苏大学学报(自然科学版), 2005, 26(5):367-371. http://industry.wanfangdata.com.cn/yj/DetailCorrelated/Reference?id=xyjsclygc201106033&title=%25e6%25bf%2580%25e5%2585%2589%25e5%2586%25b2%25e5%2587%25bb%25e5%25bc%25ba%25e5%258c%2596%25e6%25b8%2597%25e9%2593%259d%25e6%25b3%2595%25e6%258f%2590%25e9%25ab%2598K417%25e5%2590%2588%25e9%2587%2591%25e7%2596%25b2%25e5%258a%25b3%25e6%2580%25a7%25e8%2583%25bd&resourceType=PeriodicalZHANG Y K, GE T, LU J ZH.. Experimental study of laser shock processing on critical section of flying hammer[J]. Journal of Jiangsu University(Natural Science Edition), 2005, 26(5):367-371.(in Chinese) http://industry.wanfangdata.com.cn/yj/DetailCorrelated/Reference?id=xyjsclygc201106033&title=%25e6%25bf%2580%25e5%2585%2589%25e5%2586%25b2%25e5%2587%25bb%25e5%25bc%25ba%25e5%258c%2596%25e6%25b8%2597%25e9%2593%259d%25e6%25b3%2595%25e6%258f%2590%25e9%25ab%2598K417%25e5%2590%2588%25e9%2587%2591%25e7%2596%25b2%25e5%258a%25b3%25e6%2580%25a7%25e8%2583%25bd&resourceType=Periodical [11] 许海鹰, 邹世坤, 车志刚, 等.激光冲击次数对TC4氩弧焊焊缝微结构及性能的影响[J].中国激光, 2011, 38(3):92-96. http://www.opticsjournal.net/Articles/Abstract?aid=OJ110224000013bIeKhNXU H Y, ZOU SH K, CHE ZH G, et al.. Influence of laser shock processing times on TC4 argon arc welding joint microstructure and properties[J]. Chinese Journal of Lasers, 2011, 38(3):92-96.(in Chinese) http://www.opticsjournal.net/Articles/Abstract?aid=OJ110224000013bIeKhN [12] 汪诚, 赖志林, 安志斌, 等.激光冲击强化对熔覆后TC4钛合金性能的提高[J].江苏大学学报(自然科学版), 2013, 34(3):331-334. http://www.opticsjournal.net/Abstract.htm?id=OJ151103000093nUqWtZWANG CH, LAI ZH L, AN ZH B, et al.. Properties improvement of laser cladded TC4 Titanium alloy by laser shock processing[J]. Journal of Jiangsu University(Natural Science Edition), 2013, 34(3):331-334.(in Chinese) http://www.opticsjournal.net/Abstract.htm?id=OJ151103000093nUqWtZ [13] 孟宪凯, 周建忠, 谭文胜, 等.液氮温度下激光冲击波对Al-Cu合金的强化机理[J].光学精密工程, 2016, 24(10s):245-251. http://www.eope.net/gxjmgc/CN/abstract/abstract16974.shtmlMENG X K, ZHOU J ZH, TAN W SH, et al..Reening mechanism of laser shock wave in Al-Cu alloy at liquid nitrogen temperature[J]. Opt. Precision Eng., 2016, 24(10s):245-251.(in Chinese) http://www.eope.net/gxjmgc/CN/abstract/abstract16974.shtml [14] 乔红超, 赵亦翔, 赵吉宾, 等.激光冲击强化对TiAl合金组织和性能的影响[J].光学精密工程, 2014, 22(7):1766-1773. http://www.irgrid.ac.cn/handle/1471x/900885?mode=full&submit_simple=Show+full+item+recordQIAO H CH, ZHAO Y X, ZHAO J B, et al.. Effect of laser peening on microstructures and properties of TiAl alloy[J]. Opt. Precision Eng., 2014, 22(7):1766-1773.(in Chinese) http://www.irgrid.ac.cn/handle/1471x/900885?mode=full&submit_simple=Show+full+item+record [15] HUA Y Q, RONG ZH, YE Y X, et al.. Laser shock processing effects on isothermal oxidation resistance of GH586 superalloy[J]. Applied Surface Science, 2015, 330:439-444. doi: 10.1016/j.apsusc.2015.01.033 [16] SALEM A A, SHAFFER J B, SATKO D P, et al.. Workflow for integrating mesoscale heterogeneities in materials structure with process simulation of titanium alloys[J]. Integrating Materials and Manufacturing Innovation, 2014, 3(1):24. doi: 10.1186/s40192-014-0024-6 [17] CHE ZH G, YANG J, GONG SH L, et al.. Self-nanocrystallization of Ti-6Al-4V alloy surface induced by laser shock processing[J]. Rare Metal Materials and Engineering, 2014, 43(5):1056-1060. doi: 10.1016/S1875-5372(14)60100-4 [18] ARMSTRONG RW. 60 Years of hall-petch:past to present nano-scale connections[J]. Materials Transactions, 2014, 55:2-12. doi: 10.2320/matertrans.MA201302 [19] 蒋聪盈, 黄露, 王婧辰, 等.TC4钛合金激光冲击强化与喷丸强化的残余应力模拟分析[J].表面技术, 2016, 45(4):5-9. http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=bmjs201604002JIANG C Y, HUANG L, WANG J CH, et al.. Simulation analysis of the residual stress field of TC4 Ti alloy under laser shock peening and shot peening[J]. Surface Technology, 2016, 45(4):5-9.(in Chinese) http://www.wanfangdata.com.cn/details/detail.do?_type=perio&id=bmjs201604002 [20] 鲁金忠, 钱小明, 张永康, 等.激光处理对Ti-6Al-4V焊缝表面应力状况的影响[J].北京航空航天大学学报, 2007, 33(7):869-872. http://www.cnki.com.cn/Article/CJFDTotal-ZYSY201410009.htmLU J ZH, ZHANG Y K, QIAN X M, et al.. Effects of residual stresses of Ti-6Al-4V electron beam welding line by laser shock processing[J]. Journal of Beijing University of Aeronautics and Astronautics, 2007, 33(7):869-872.(in Chinese) http://www.cnki.com.cn/Article/CJFDTotal-ZYSY201410009.htm [21] 王琪, 文智, 易丹青, 等.TA15钛合金高温氧化行为[J].粉末冶金材料科学与工程, 2012, 17(5):571-578. http://www.cqvip.com/QK/88384X/201205/43708122.htmlWANG Q, WEN ZH, YI D Q, et al.. Oxidation behaviors of TA15 titanium alloy[J]. Materials Science and Engineering of Powder Metallurgy, 2012, 17(5):571-578.(in Chinese) http://www.cqvip.com/QK/88384X/201205/43708122.html -
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