• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文会议>2003 International Thermal Spray Conference Vol.1; May 5-8, 2003; Orlando, Florida, USA >Microstructural Formation of Vacuum Plasma Sprayed Ti-6Al-4V Alloy
【24h】

Microstructural Formation of Vacuum Plasma Sprayed Ti-6Al-4V Alloy

机译：真空等离子喷涂Ti-6Al-4V合金的组织形成

获取原文
获取原文并翻译 | 示例
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Titanium alloys are extremely reactive in the molten state, therefore near-net shape and complex shape components cannot be produced by many techniques used for steel, aluminum and other less reactive metals. The vacuum plasma spray (VPS) process is a well-known method for coating and forming reactive metals and alloys such as titanium alloys. In this study the internal microstructure of individual splats, porosity, and mechanical properties of Ti-6Al-4V deposited by vacuum plasma spray forming (VPSF) were studied using SEM, XRD, mercury porosimetry, image analysis and mechanical testing. Results described in a companion paper show that while tensile and yield strength rise with increasing initial powders size, elongation still remains as low as 1%. The as-sprayed structure consists of α' martensite with a small amount of residual β between the martensite colonies as well as pores between the splats. The fracture surface within the splats is indicative of ductile failure. The low cohesion between the splats results in damage accumulation at the boundaries and failure at small elongations. Post deposition heat treatments were conducted to improve the coating structure and were successful in improving the ductility to levels approaching that of traditionally processed material.
机译：钛合金在熔融状态下具有极强的反应性，因此无法通过许多用于钢，铝和其他反应性较弱的金属的技术来生产近净形和复杂形状的组件。真空等离子喷涂（VPS）工艺是用于涂覆和形成活性金属和合金（例如钛合金）的众所周知的方法。在这项研究中，使用SEM，XRD，汞孔隙率法，图像分析和机械测试研究了通过真空等离子喷涂成型（VPSF）沉积的Ti-6Al-4V的个别片的内部微观结构，孔隙率和力学性能。随附论文中描述的结果表明，尽管拉伸强度和屈服强度随初始粉末尺寸的增加而增加，但伸长率仍保持低至1％。喷涂后的结构由α'马氏体组成，马氏体菌落之间以及小孔之间的孔中残留有少量β。 splats内的断裂表面指示韧性破坏。板之间的低内聚力会导致边界处的损伤积累，以及小延伸率时的破坏。进行沉积后热处理以改善涂层结构，并成功地将延展性提高到接近传统加工材料的水平。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号