全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
材料工程  2013 

钛合金表面激光熔覆Ni基合金涂层中析出相热力学模拟计算

DOI: 10.3969/j.issn.1001-4381.2013.10.006

Keywords: 激光熔覆,微观组织,析出相,热力学计算

Full-Text   Cite this paper   Add to My Lib

Abstract:

采用横流CO2激光器在TC4合金表面熔覆Ni基合金涂层,对激光熔覆层的微观组织、析出相、各合金元素在γ-Ni和M23C6相中含量变化进行了研究。结果表明,熔覆层可分为三个区熔覆区、结合区和基体热影响区。熔覆区由γ-Ni,TiB2,TiC,M23C6和Ni3B相组成,其中,TiB2,TiC和M23C6细小颗粒均匀分布于γ-Ni初晶上,共晶组织由γ-Ni和Ni3B组成。为揭示TC4合金表面激光熔覆Ni基合金涂层在3500~500K温度范围的相组成及组织变化规律,利用Thermo-Calc软件及相应Ni基合金数据库对TC4合金表面激光熔覆Ni基合金涂层凝固过程中各析出相进行了热力学计算分析,研究了熔覆层中γ-Ni,TiB2,TiC,M23C6和Ni3B各相相对含量和B,C,Cr,Fe,Ni,Ti元素在γ-Ni和M23C6相中的含量随温度变化关系,为TC4合金表面激光熔覆Ni基合金涂层成分设计和工艺优化提供理论依据。

References

[1]  牛伟, 孙荣禄. 钛合金激光熔覆的研究现状与发展趋势[J]. 材料导报, 2006, 20(7): 58-60. NIU Wei, SUN Rong-lu. Research progress and development on laser cladding on titanium alloys surface[J]. Materials Review, 2006, 20(7): 58-60.
[2]  王慧萍, 李军, 张光钧, 等. TC4钛合金表面激光熔覆TiC复合涂层组织和耐磨性能[J]. 金属热处理, 2010, 35(8): 38-41. WANG Hui-ping, LI Jun, HANG Guang-jun, et al. Microstructure and wear resistance of laser clad TiC coating on TC4 titanium alloy surface[J]. Heat Treatment of Metals, 2010, 35(8): 38-41.
[3]  牛伟, 孙荣禄, 雷贻文. Ti6Al4V合金表面激光熔覆钛基复合涂层的显微组织研究[J]. 金属热处理, 2008, 33(7): 50-52. NIU Wei, SUN Rong-lu, LEI Yi-wen. Microstructure of laser clad Ti-based composite coating on Ti6Al4V alloy[J]. Heat Treatment of Metals, 2008, 33(7): 50-52.
[4]  郝珊, 李国忠, 王福明, 等. T91耐热钢析出物的热力学计算和平衡相分析[J].特殊钢, 2008, 29(3): 16-18. HAO Shan, LI Guo-zhong, WANG Fu-ming, et al. Thermodynamic calculation and analysis on precipitated phases in heat-resistant steel T91[J]. Special Steel, 2008, 29(3): 16-18.
[5]  LI D, LIU L G, HANG Y, et al. Phase diagram calculation of high chromium cast irons and influence of its chemical composition[J]. Materials and Design, 2009, 30(2): 340-345.
[6]  路妍, 王军华, 苏杰, 等. 30Cr3Si2MnNiNb钢中未溶相的热力学计算及分析[J]. 材料工程, 2011, (9): 1-5. LU Yan, WANG Jun-hua, SU Jie, et al. Thermodynamic calculation and experimental analysis on undissovled phases of 30Cr3Si2MnNiNb steel[J]. Journal of Materials Engineering, 2011, (9): 1-5.
[7]  焦少阳, 朱冠妮, 董建新, 等. Hastelloy C-276中碳化物析出及晶界贫Mo规律研究[J]. 材料工程, 2011, (1): 47-52. JIAO Shao-yang, HU Guan-ni, DONG Jian-xin, et al. Carbide evolution and Mo depletion Law in Hastelloy C-276[J]. Journal of Materials Engineering, 2011, (1): 47-52.
[8]  ANDERSSON J O, HELANDER T, HOGLUND L, et al. Thermo-Calc & DICTRA, computational tools for materials sciences[J]. Calphad, 2002, 26(2): 273-312.
[9]  SCHAFFERNA B C, CERJA H H. Design of improved heat resistant materials by use of computational thermodynamics[J]. Calphad, 2001, 25(2): 241-251.
[10]  蒯春光, 彭志方. T/P91钢在450-1200℃区间各相元素的分配特征及相稳定性[J]. 金属学报, 2008, 44(8): 897-900. UAI Chun-guang, PENG hi-fang. Elemental partitioning characteristics and stability of equilibrium phases during 450-1200℃ in T/P91 steel[J]. Acta Metallurgica Sinica, 2008, 44(8): 897-900.
[11]  于鸿垚, 董建新, 谢锡善. 18Cr10NiNb耐热钢析出相的热力学计算和平衡相分析[J]. 材料研究学报, 2010, 24(5): 449-454.YU Hong-yao, DONG Jian-xin, XIE Xi-shan. Thermodynamic calculation and analysis on precipitated phases in 18Cr10NiNb heat-resistant steel[J]. Chinese Journal of Materials Research, 2010, 24 (5): 449-454.
[12]  LEI Y W, SUN R L, LEI J B, et al. A new theoretical model for high power laser clad TiC/NiCrBSiC composite coatings on Ti6Al4V alloys[J]. Optics and Lasers in Engineering, 2010, 48(9): 899-905.
[13]  SUN R L, YANG D Z, GUO L X, et al.Microstructure and wear resistance of NiCrBSi laser clad layer on titanium alloy substrate[J]. Surface and Coatings Technology, 2000, 132(2-3): 251-255.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133