Microstructure development in warm upset AM Ti64

Author:

Szczepanik Stefan1,Nikiel Piotr1

Affiliation:

1. Faculty of Metals Engineering and Industrial Computer Science, AGH University of Science and Technology, Krakow, Poland

Abstract

As AM Ti alloys generally contain porosity, for demanding applications it must be eliminated. HIP was reported, but it is expensive; accordingly forging by upsetting of EBM Ti6Al4V at 900?C was investigated. Strain rates of 0.01-1 s-1 were employed. In contrast to the as-printed material, porosity was not detected. From the plastometric tests the stress-true strain relationships were obtained and peak stresses were determined. Using the Simufact simulation program, details of the distribution of equivalent strains and temperatures were obtained. Comparison with wrought cast and printed materials is reported. The eventual microstructure consisted of alpha lamellae ranging in width from 1.81 to 2.34 ?m, depending on strain rate and deformation, and beta formed in the interlamellar space during cooling in air. The hardness of the fully processed material was in the range of 293-304 HV1, independently of strain rate. This is to be compared with EBM Ti64, 316-360 HV0.3, and similarly processed cast wrought material, 350-365 HV0.3.

Publisher

National Library of Serbia

Subject

Materials Chemistry,Metals and Alloys,Condensed Matter Physics,Ceramics and Composites

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3