Characterization of titanium powder: Microscopic views and macroscopic flow

Pohlman, Nicholas A.; Roberts, John A.; Gonser, Matthew

doi:10.1016/j.powtec.2012.05.009

Cited by 16 publications

(7 citation statements)

References 11 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Likewise, the characterization of powders concerning their dynamic avalanche angle, has gained increasing attention [4,5,16,17,[36][37][38][39]. The principal idea was first published by Kaye et al, who investigated the use of avalanche studies to describe rheological properties of alumina powder [40][41][42].…”

Section: Flowability: a Key Rolementioning

confidence: 99%

Powders for powder bed fusion: a review

et al. 2019

View full text Add to dashboard Cite

The quality of powder used in powder bed-based additive manufacturing plays a key role concerning process performance and end part properties. Even though this is a generally accepted fact, there is still a lack of a comprehensive understanding of the powder property-part property relationship. However, numerous investigations focusing on selected powder properties and their corresponding influence on process aspects or final part properties have been published in recent years. Still, generalized statements on powder requirements for a defined process performance are not available. This can be attributed to the fact that the community has not yet come to an agreement which characterization techniques are most suitable for powder characterization in the additive manufacturing context and in most cases only selected aspects have been investigated for special powder materials. The aim of this review is to assess these building blocks of knowledge and to provide an overview on the current state of the art.

show abstract

Section: Flowability: a Key Rolementioning

confidence: 99%

Powders for powder bed fusion: a review

et al. 2019

View full text Add to dashboard Cite

show abstract

“…Furthermore, the powder needs to be delivered uniformly mixed so that the produced parts are homogeneous and free of imperfections or voids which could cause poor quality end products that do not perform as intended. Understanding the flow characteristics of particular Ti powder size ranges under various conditions is essential to developing optimal manufacturing techniques, which was the emphasis of the previously reported study [3]. The focus of this subsequent investigation is the segregation of poly-disperse titanium powder mixtures, and how segregation is affected by flow rates and free surface energy.…”

Section: Introductionmentioning

confidence: 98%

“…The powder considered in this research is produced using the Armstrong Process implemented by International Titanium Powder (ITP) subsidiary of Cristal Metals [1]. The raw powder output from the Armstrong Process is composed of particles of many sizes; ITP has implemented a proprietary milling technique which attempts to create more round and uniform particles by breaking off extremely small asperities and edges without substantially altering the particle size distribution [3]. A critical feature is that the powder is composed of a variance of shapes and sizes resulting in a high degree of poly-disperse particles.…”

Section: Introductionmentioning

confidence: 99%

Segregation of titanium powder with polydisperse size distribution: Spectral and correlation analyses

2015

Self Cite

View full text Add to dashboard Cite

“…The manufacturing cost can be reduced through producing near net-shape components with little machining [5,6]. PM can be utilized to effectively eliminate composition segregation defect in high-strength alloys, such as the Ti-17 alloy.…”

Section: Introductionmentioning

confidence: 99%

Effect of Isothermal Forging on the Microstructure and Properties of Ti‐17 Titanium Alloy Prepared by Different Powder Compaction Methods

Zhao¹,

Li²,

Guo³

et al. 2016

Proceedings of the 13th World Conference on Titanium

View full text Add to dashboard Cite

The isothermal forging was utilized to improve the microstructure and properties of three kinds of Ti-17 titanium powder compacts which were prepared through vacuum sintering (VS-ing), laser sintering (LS-ing) and hot isostatic pressing (HIP-ing). In order to fully densify the powder compact and simultaneously improve the microstructure, the isothermal forging was conducted above and below the beta transus temperature of powder compact. After isothermal forging, the residual pores existed in microstructure of VS-ed Ti-17 titanium powder compact are fully closured. The microstructure with coarse columnar beta grains of LS-ed Ti-17 titanium powder compact transforms into bimodal microstructure with lamellar and equiaxed alpha phases. The microstructure with primary coarse grains of HIP-ed Ti-17 titanium powder compact are thoroughly broken and transformed into equiaxed microstructure. The mechanical properties of all three kinds of Ti-17 titanium powder compacts are significantly improved.

show abstract

Characterization of titanium powder: Microscopic views and macroscopic flow

Cited by 16 publications

References 11 publications

Powders for powder bed fusion: a review

Powders for powder bed fusion: a review

Segregation of titanium powder with polydisperse size distribution: Spectral and correlation analyses

Effect of Isothermal Forging on the Microstructure and Properties of Ti‐17 Titanium Alloy Prepared by Different Powder Compaction Methods

Contact Info

Product

Resources

About