钛表面激光快速成形AlSi10Mg合金的稀释特性研究

doi:10.13228/j.boyuan.issn1006-6543.20170119

摘要
图/表
参考文献
相关文章 (15)

全文: PDF (0 KB) HTML (1 KB)
输出: BibTeX | EndNote (RIS)

摘要为保证激光快速成形制备钛铝层状复合材料具有良好的冶金结合，分析了主要工艺参数对稀释率的影响，并采用EPMA、SEM、OM、XRD和显微硬度测试等方法对稀释过程中组织结构演变、相组成以及稀释对显微硬度分布的影响等稀释特征进行了研究。结果表明：激光功率和扫描速率的增大引起稀释率增加，76%左右稀释率的样品表面平整光滑，无明显裂纹；稀释作用导致熔池内部发生对流现象，使成分趋于均一，但仍存在宏观偏析现象，熔化基体对熔池成分的稀释生成大量AlTi3、Al3Ti中间相和Si2Ti、Ti5Si3陶瓷相；激光成形过程的快速冷却导致的晶粒细化和稀释作用生成的硬质相使熔池区显微硬度明显增加，为基体硬度的5倍左右。

	服务

	把本文推荐给朋友
	加入我的书架
	加入引用管理器
	E-mail Alert
	RSS
	作者相关文章
	张诚
	刘阳
	马运柱
	刘文胜
	刘超

关键词 ：激光快速成形, 稀释, 钛, AlSi10Mg, 显微硬度

Abstract：In order to ensure that the titanium-aluminum layered composite prepared by laser rapid forming has good metallurgical bonding， the effect of main process parameters on the dilution rate was analyzed. And dilution characteristics such as microstructure evolution， phase composition， and dilution effects on microhardness were studied using EPMA， SEM， OM， XRD and micro-hardness test. The results show that the dilution rate increases with the increase of laser power or scanning speed. The sample with dilution ratio of 76% has smooth surface and no obvious cracks. Dilution causes the convection phenomenon inside the molten pool to make the ingredients tend to be uniform but there is still macro segregation. A large amount of AlTi3， Al3Ti mesophase and Si2Ti， Ti5Si3 ceramic phases are produced via the dilution of the molten pool by melting matrix. The grain refinement caused by the rapid cooling of the laser process and the hard phase produced by dilution significantly increase the microhardness of the molten pool area， where the microhardness is about 5 times the hardness of the matrix.

Key words： laser rapid forming dilution titanium AlSi10Mg microhardness

收稿日期: 2017-08-21 出版日期: 2019-02-22

基金资助:国家重点基础研究发展计划

通讯作者: 马运柱 E-mail: zhuzipm@csu.edu.cn

引用本文:

张诚，刘阳，马运柱，刘文胜，刘超. 钛表面激光快速成形AlSi10Mg合金的稀释特性研究[J]. , 2019, 29(01): 6-12.
ZHANG Cheng，LIU Yang，MA Yun-zhu，LIU Wen-sheng，LIU Chao. Study on the dilution characteristics of laser rapid forming AlSi10Mg alloy on titanium substrate. , 2019, 29(01): 6-12.

链接本文:

http://edit.chinamet.cn/Jweb_fmyjgy/CN/10.13228/j.boyuan.issn1006-6543.20170119 或 http://edit.chinamet.cn/Jweb_fmyjgy/CN/Y2019/V29/I01/6

[1] 左铁钏.高强铝合金的激光加工[M]. 北京: 国防工业出版社, 2002. [2]喻思, 郎利辉, 刚王.热等静压成形铝合金粉末的数值模拟研究[J].粉末冶金工业, 2016, 26(2):17-22 [3]Shunv L, Zongde L, Yang W, et al.Ti-based composite coatings with gradient TiC_x reinforcements on TC4 titanium alloy prepared by laser cladding[J].Science China(Technological Sciences), 2014, 57(7):1454-1461 [4]刘珍珍, 王春明, 肖素芬.不同尺寸钛粉末烧结后的显微组织与力学性能分析[J].粉末冶金工业, 2015, 25(3):29-32 [5]范兴平, 杨成.烧结温度对生物医用钛基复合材料性能的影响[J].粉末冶金工业, 2016, 26(6):46-49 [6]柳培, 王爱琴, 郝世明.高硅铝合金及颗粒增强铝基复合材料组织性能的探究[J].粉末冶金工业, 2014, 24(4):45-49 [7]沈晓, 程继贵, 李剑峰.轧膜成形制备-层状功能梯度材料及其性能研究[J].粉末冶金工业, 2016, 26(6):8-14 [8]陈泽军, 陈全忠, 黄光杰.铝_钛_铝三层复合板热轧工艺及微观组织研究[J].材料导报, 2012, 26(3):106-109 [9]李兴华, 杨绍利.钛铝合金制备技术现状及新进展[J].材料导报, 2011, 25(4):94-100 [10]李文虎.复合材料抗热震性研究[J].粉末冶金工业, 2011, 21(5):51-54 [11]Xunzhong G, Minyu F, Zhongli L, et al.Explosive Cladding and Hot Pressing of Ti_Al_Ti Laminates[J].Science Direct, 2017, 46(5):1192-1196 [12]张琛, 杨森, 颜银标.基合金成形技术的研究现状[J].兵器材料科学与工程, 2017, 40(4):126-132 [13] 陈波, 熊华平, 沈强, et al.钎焊方法制备Ti/TiAl/Al系变密度功能梯度材料[J].材料工程, 2011, 2:56-59 [14] 高菲.钛铝金属间化合物/钛合金结构梯度涂层形成机制研究[D]. 哈尔滨工程大学, 2012. [15]熊华平, 张联盟, 沈强.的连接及系梯度材料的制备[J].金属学报, 1999, 35(10):1053-1056 [16]覃思思, 勇余, 曾归余.打印用金属粉末的制备研究[J].粉末冶金工业, 2016, 26(5):21-24 [17]Whittaker D.欧洲粉末冶金大会的金属增材制造：高温合金、粉末雾化、喷墨和激光金属沉积工艺的进展[J].粉末冶金工业, 2016, 26(3):1-12 [18] Zhang Z, Yu T, Kovacevic R.Erosion and corrosion resistance of laser cladded AISI 420 stainless steel reinforced with VC[J]. Applied Surface Science, 2017, 410: 225-240. [19] Wang Q-Y, Xi Y-C, Liu X-Y, et al.Microstructure and mechanical properties of interface between laser cladded Hastelloy coating and steel substrate[J]. Science Direct, 2017, 27: 733-740. [20] Brandl E, Heckenberger U, Holzinger V, et al.Additive manufactured AlSi10Mg samples using Selective Laser Melting (SLM): Microstructure, high cycle fatigue, and fracture behavior[J]. Materials and Design, 2012, 34: 159-169. [21]张娟, 李洋波, 孟宪磊.金属粉末激光烧结过程中搭接率敏感性分析[J].粉末冶金工业, 2017, 27(1):31-36 [22]史金光, 翁子清, 金霞.选择性激光熔化高熵合金成形试验[J].工业技术创新, 2017, 04(04):48-52 [23] 陈菊芳, 陈国炎, 孙凌燕, et al.H13钢表面激光熔覆层稀释率及强化效果研究[J]. 激光技术, 2017, (04): 596-601. [24]杨洗陈, 郑天禧, 张乃坤.合金激光熔敷中对流传质研究[J].金属学报, 1992, 28(02):86-90 [25]张洋, 宋博瀚, 薛峰.稀释率对镍基合金激光熔覆层组织和性能的影响[J].应用激光, 2016, 36(3):259-264 [26]Krishnan M, Atzeni E, Canali R, et al.On the effect of process parameters on properties of AlSi10Mg parts produced by DMLS[J].Rapid Prototyping Journal, 2014, 20(6):449-458 [27]刘锦辉, 史金光, 李亚.选择性激光熔化合金粉末的成形工艺[J].黑龙江科技大学学报, 2015, 25(5):509-515 [28]袁学兵, 魏青松, 文世峰.选择性激光熔化合金粉末研究[J].热加工工艺, 2014, 43(4):91-94 [29]赵晓明, 齐元昊, 于全成.铝合金打印组织与性能研究[J].铸造技术, 2016, 37(11):2402-2404 [30] Huang Y.Characterization of dilution action in laser-induction hybrid cladding[J]. Optics & Laser Technology, 2011, 43: 965-973. [31] Li R, Li Z, Huang J, et al.Dilution effect on the formation of amorphous phase in the laser cladded Ni–Fe–B–Si–Nb coatings after laser remelting process[J]. Applied Surface Science, 2012, 258: 7956-7961. [32] Liu K, Li Y, Wang J, et al.Effect of high dilution on the in situ synthesis of Ni–Zr_Zr–Si(B, C) reinforced composite coating on zirconium alloy substrate by laser cladding[J]. Materials and Design, 2015, 87(66-74). [33]王红颖, 崔承云, 周杰.工具钢表面激光熔覆基合金涂层的组织及性能[J].吉林大学学报工学版, 2010, 40(04):1000-1004 [34] 胡赓祥, 蔡珣, 戎咏华.材料科学基础[M]. 上海: 上海交通大学出版社, 2006. [35] Wu D, Guo M, Ma G, et al.Dilution characteristics of ultrasonic assisted laser clad yttria-stabilized zirconia coating[J]. Materials Letters, 2015, 141: 207-209. [36] Zhao G, Cho C, Kim J-D.Application of 3-D finite element method using Lagrangian formulation to dilution control in laser cladding process[J]. Mechanical Sciences, 2003, 45: 777-796.