# Peculiar microstructural evolution and hardness variation depending on laser powder bed fusion-manufacturing condition in Ti–6Al–2Sn–4Zr–6Mo

https://mdr.nims.go.jp/datasets/b110299f-a669-446f-9fa7-59a2fdf9f8e4

## File

- [2024Cobbinah-SmartMaterManuf.pdf](https://mdr.nims.go.jp/filesets/06b3c735-19e8-4062-93ee-84cf9ad0c32d/download) ([Detail](https://mdr.nims.go.jp/filesets/06b3c735-19e8-4062-93ee-84cf9ad0c32d.md))

## Id

b110299f-a669-446f-9fa7-59a2fdf9f8e4

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2024-04-30T04:27:41.579827Z

## Updated at

2024-04-30T23:30:09.961881Z

## Published at

2024-04-30T23:30:10.306008Z

## Doi



## First published url

https://doi.org/10.1016/j.smmf.2024.100050

## Date published

2024-03-27

## Recorded date published

2024

## Resource type

journal_article

## Manuscript type

vor

## Collection



## Title

- title: Peculiar microstructural evolution and hardness variation depending on laser
    powder bed fusion-manufacturing condition in Ti–6Al–2Sn–4Zr–6Mo
  title_type: original
  lang: en

## Description

- description: This study comprehensively evaluates the phases, microstructure evolution,
    and hardness performance of Ti-6Al-2Sn-4Zr-6Mo wt.% parts processed by Laser Powder
    Bed Fusion (LPBF). A correlation between the LPBF process parameters, generated
    microstructures, and consequent hardness properties has been established. High
    laser power inputs at slow scan speed combinations produce pronounced columnar
    microstructures with nanosized acicular martensitic α phases. Conversely, low
    laser power input at high scan speeds produces equiaxed microstructures in the
    scanning direction and exhibits microsized acicular martensitic α phases when
    observed from the build direction. The sample at 180 W and 1200 mm/s uniquely
    forms an equiaxed microstructure in the scanning and build directions. Insights
    from the computational thermal fluid dynamics simulation reveal that higher thermal
    gradients and cooling rates at the melt pool surface promote the formation of
    equiaxed grains ahead of the columnar solidification front. Also, the hardness
    performance of all fabricated samples at fixed power inputs (180-360 W) decreases
    with increasing scan speed (600-1400 mm/s). The average hardness of the LPBFed-samples
    range from 513.15 HV to 328.75 HV.
  description_type: abstract
  lang: und

## Creator

- name: Prince Valentine Cobbinah
  role: author
  orcid: https://orcid.org/0000-0002-4846-3958
- name: Sae Matsunaga
  role: author
  orcid: https://orcid.org/0000-0001-7285-5372
- name: Yoshiaki Toda
  role: author
  orcid: https://orcid.org/0000-0002-8343-2890
- name: Ryosuke Ozasa
  role: author
  orcid: https://orcid.org/0000-0002-2773-072X
- name: Masayuki Okugawa
  role: author
  orcid: https://orcid.org/0000-0002-6844-6856
- name: Takuya Ishimoto
  role: author
  orcid: https://orcid.org/0000-0003-0081-0591
- name: Yuheng Liu
  role: author
  orcid: https://orcid.org/0000-0003-1790-1844
- name: Yuichiro Koizumi
  role: author
  orcid: https://orcid.org/0000-0001-7061-7135
- name: Pan Wang
  role: author
  orcid: https://orcid.org/0000-0002-2079-9580
- name: Takayoshi Nakano
  role: author
  orcid: https://orcid.org/0000-0001-8052-1698
- name: Yoko Yamabe-Mitarai
  role: author
  orcid: https://orcid.org/0000-0002-9674-5503

## Contact agent



## Publisher

organization: Elsevier BV

## Managing organization



## Keyword

- subject: LPBF
  schema: not_defined
- subject: Ti6246
  schema: not_defined
- subject: Polycrystaline microstructure
  schema: not_defined
- subject: Metastable phase
  schema: not_defined
- subject: Rapid cooling
  schema: not_defined
- subject: Thermal history
  schema: not_defined

## Rights

- identifier: https://creativecommons.org/licenses/by/4.0/

## Other identifier(s)



## Data origin



## Embargo



## Journal

- title: Smart Materials in Manufacturing
  issn: '27728102'
  volume: '2'
  article_number: '100050'

## Conference



## Related item



## Funding

- identifier: " JP21H05198"
  funder_name: Japan Society for the Promotion of Science
  description: Science for Creation of Super-Titanium by Super-Thermal Field
- identifier: JP23H00235
  funder_name: Japan Society for the Promotion of Science
- identifier: JPMJCR2194
  funder_name: Japan Science and Technology Agency
- funder_name: Light Metal Educational Foundation

## Instrument



## Instrument operator



## Instrument managing organization



## Measurement method



## Specimen



## Chemical composition



## Structure for specimen



## Structural feature for specimen



## Specific property for specimen



## Process for specimen treatment



## Computational method



## Energy level/transition state



## Software



## Custom property



## Fileset

- id: 06b3c735-19e8-4062-93ee-84cf9ad0c32d
  filename: 2024Cobbinah-SmartMaterManuf.pdf
  content_type: application/pdf
  size: 7994419
  md5: a68c752c6f98d9535acf0e10373ee661

## Thumbnail

fileset_id: 06b3c735-19e8-4062-93ee-84cf9ad0c32d
filename: 2024Cobbinah-SmartMaterManuf.pdf