选择性激光熔覆与精密锻造联合成形工艺对Ti6Al4V合金显微组织与力学性能的影响

Saved in:

Bibliographic Details
Published in	中国有色金属学报：英文版 Vol. 27; no. 5; pp. 1036 - 1042
Main Author	张琦;梁正龙;曹苗;刘梓璠;张安峰;卢秉恒
Format	Journal Article
Language	English
Published	2017
Subjects	选择性激光熔覆;Ti6Al4V合金;精密锻造;显微组织;各向异性
Online Access	Get full text
ISSN	1003-6326

More Information
Bibliography:	To improve the mechanical properties of Ti6Al4V alloy prepared by selective laser melting(SLM)process,the precision forging was conducted at950°C and different strains and strain rates.The microstructure evolution of as-built samples and forged samples in both horizontal and vertical sections was visualized and analyzed by optical microscope and X-ray diffraction.The microstructure was improved by the precision forging and subsequent water quenching.The porosity in each section was accounted.It can be seen that high strain rate and large deformation result in low porosity,consequently contributing to a better fatigue performance.The micro-hardness was lowered after precision forging and water quenching,while the difference of microhardness between the horizontal and vertical sections became smaller,which illustrated that this process can improve the anisotropy of structural components fabricated by SLM. selective laser melting; Ti6Al4V alloy; precision forging; microstructure; anisotropy 43-1239/TG
ISSN:	1003-6326