Origin and Effects of Microstructural Heterogeneity in Powder-based Additive Manufacturing of Ti-6Al-4V

摘要：

　　Additive manufacturing(AM)usually grows a part directly from 3D drawings,which enables significantly higher geometric and metallurgical flexibilities in contrast with conventional subtractive processes.However,the AM thermal histories often involve extremely rapid and localised dissipating heating-cooling cycles,and cause significant heterogeneity in microstructure and defect distribution,which can lower the overall mechanical properties.To understand the origin and consequences of such heterogeneities,the microstructural variation for the Electron-beam Melting(EBM)were systematically investigated,focusing on the workhorse alloy in AM,Ti-6Al-4V.The outcomes were correlated with X-CT data.

关键词： Manufacturing Ti-6Al-4V Microstructure Quantification Heterogeneity

作者: Zhao Hao Tammas-Williams Samuel Zhang Chaoqun Prangnell Philip

作者单位: 7 Yudong Road,Shunyi District,Beijing 101318,China;316 Oxford Road,Manchester,M13 9PL,UK 316 Oxford Road,Manchester,M13 9PL,UK;Western Bank,Sheffield,S10 2TN,UK 316 Oxford Road,Manchester,M13 9PL,UK;800 Dongchuan Road,Shanghai 200240,China 316 Oxford Road,Manchester,M13 9PL,UK

会议类型: 国际会议

会议名称: 2018世界粉末冶金大会

会议地点: 北京

会议语种:英文

页码: 1606-1611

在线出版日期: 2018-09-16（万方平台首次上网日期，不代表论文的发表时间）