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首页> 外文期刊>Optical engineering >Characterization of laser peening-induced effects on a biomedical Ti6Al4V alloy by thermoelectric means
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Characterization of laser peening-induced effects on a biomedical Ti6Al4V alloy by thermoelectric means

机译：利用热电手段表征激光喷丸对生物医学Ti6Al4V合金的作用

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摘要

Laser peening has recently emerged as a useful technique to overcome detrimental effects associated with other well-known surface modification processes such as shot peening or grit blasting used in the biomedical field. It is worthwhile to notice that besides the primary residual stress effect, thermally induced effects might also cause subtle surface and subsurface microstructural changes that might influence corrosion resistance and fatigue strength of structural components. In this work, plates of Ti-6Al-4V alloy of 7 mm in thickness were modified by laser peening without using a sacrificial outer layer. Irradiation by a Q-switched Nd-YAG laser (9.4-ns pulse length) working at the fundamental 1064-nm wavelength at 2.8 J/pulse and with water as a confining medium was used. Laser pulses with a 1.5-mm diameter at an equivalent overlapping density of 5000 cm~(-2) were applied. Attempts to analyze the global-induced effects after laser peening were addressed by using the contacting and noncontacting thermoelectric power techniques.
机译：激光喷丸技术最近已成为一种有用的技术，可以克服与其他众所周知的表面改性工艺（例如在生物医学领域中使用的喷丸处理或喷砂处理）相关的有害影响。值得注意的是，除了主要的残余应力效应外，热诱导效应还可能引起表面和亚表面的细微结构变化，从而影响结构部件的耐腐蚀性和疲劳强度。在这项工作中，在不使用牺牲性外层的情况下，通过激光喷丸对厚度为7 mm的Ti-6Al-4V合金板进行了改性。使用由Q开关Nd-YAG激光（9.4ns脉冲长度）照射的基本工作波长为1064nm，波长为2.8J /脉冲，并用水作为密闭介质。施加直径为1.5mm的激光脉冲，等效重叠密度为5000 cm〜（-2）。通过使用接触式和非接触式热电技术，尝试分析激光喷丸后的整体感应效应。

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  • 来源
    《Optical engineering》 |2014年第12期|122502.1-122502.7|共7页
  • 作者

    Hector Carreon; Sandra Barriuso; Juan Antonio Porro; Jose Luis Gonzalez-Carrasco; Jose Luis Ocana;

  • 作者单位

    Instituto de Investigaciones Metalurgicas, UMSNH-IIM, Edif. 'U' C.U., 58000-888 Morelia, Mexico;

    Centro Nacional de Investigaciones Metalurgicas, CENIM-CSIC, Avenida Gregorio del Amo 8, 28040 Madrid, Spain;

    Universidad Politecnica de Madrid, Ctr. Laser UPM, 28040 Madrid, Spain;

    Centro Nacional de Investigaciones Metalurgicas, CENIM-CSIC, Avenida Gregorio del Amo 8, 28040 Madrid, Spain,Centro Investigacion Biomedica en Red en Bioingenieria, Biomateriales y Nanomedicina, 28029 Madrid, Spain;

    Universidad Politecnica de Madrid, Ctr. Laser UPM, 28040 Madrid, Spain;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);
  • 原文格式 PDF
  • 正文语种 eng
  • 中图分类
  • 关键词

    laser shock peening; thermoelectric measurements; Ti-6Al-4V; biomaterial;

    机译：激光冲击喷丸;热电测量;Ti-6Al-4V;生物材料;

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