# Unique Formation Characteristics of α’-Martensite in Ti Alloys Processed by Laser Powder Bed Fusion

https://mdr.nims.go.jp/datasets/478bc498-85c4-4d00-8ad1-2a97e2b4dd59

## File

- [20250724AM_Abstrac_Jiyebeen_F.pdf](https://mdr.nims.go.jp/filesets/9b537558-6ccc-4766-baf7-62488a6679af/download) ([Detail](https://mdr.nims.go.jp/filesets/9b537558-6ccc-4766-baf7-62488a6679af.md))

## Id

478bc498-85c4-4d00-8ad1-2a97e2b4dd59

## Local identifier



## Visibility

open_to_public

## State

published

## Created at

2025-09-26T00:46:11.712478Z

## Updated at

2025-10-21T07:06:51.667703Z

## Published at

2025-10-21T06:43:43.448495Z

## Doi

https://doi.org/10.48505/nims.5818

## First published url



## Date published



## Recorded date published



## Resource type

conference_poster

## Manuscript type

authors_original

## Collection



## Title

- title: Unique Formation Characteristics of α’-Martensite in Ti Alloys Processed
    by Laser Powder Bed Fusion
  title_type: original
  lang: en

## Description

- description: 'Single and multiple bead tests were conducted on two bulk titanium
    alloys, (α+β) Ti-6Al-4V (Ti64) and near-α Ti-6Al-2Sn-4Zr-6Mo (Ti6246), to assess
    the dependence of the melt pool shape and the heat-affected zone on the α''-martensite
    formation. Although the exact mechanism remains unclear, the results suggest that
    prolonged thermal exposure plays a critical role. Notably, one alloy showed an
    a typical α'' formation behavior: α'' structures became finer with increasing
    energy density, indicating a unique interplay between alloy composition and localized
    thermal conditions.'
  description_type: abstract
  lang: eng

## Creator

- name: Yebeen Ji
  role: author
  organization: Graduate School of Frontier Sciences, The University of Tokyo
- name: Prince Valentine Cobbinah
  role: author
  organization: Graduate School of Frontier Sciences, The University of Tokyo
- name: Yoshiaki Toda
  role: author
  orcid: https://orcid.org/0000-0002-8343-2890
  organization: National Institute for Materials Science
  department: Center for Basic Research on Materials/Data-driven Materials Research
    Field/Materials Modeling Group
- name: Ryosuke Ozasa
  role: author
  organization: Graduate School of Engineering, Osaka University
- name: Takuya Ishimoto
  role: author
  organization: University of Toyama
- name: Takayoshi Nakano
  role: author
  organization: Graduate School of Engineering, Osaka University
- name: Yoko Yamabe-Mitarai
  role: author
  organization: Graduate School of Frontier Sciences, The University of Tokyo

## Contact agent



## Publisher



## Managing organization



## Keyword

- subject: Additive Manufacturing
  schema: not_defined
- subject: Powder Bed Fusion,
  schema: not_defined
- subject: Ti-6Al-4V
  schema: not_defined
- subject: Ti-6Al-2Sn-4Zr-6Mo
  schema: not_defined
- subject: volumetric energy density
  schema: not_defined
- subject: fast cooling rate
  schema: not_defined
- subject: melt pool shape
  schema: not_defined

## Rights

- identifier: http://rightsstatements.org/vocab/InC/1.0/

## Other identifier(s)



## Data origin

- data_origin_type: other

## Embargo



## Journal



## Conference

name: 日本Additive Manufacturing学会 第1回年次講演大会
start_date: 2025-09-01
end_date: 2025-09-03
identifier: https://ji-am.jp/2025/05/1stannualmeeting1/

## Related item



## Funding

- identifier: 21H05198
  funder_name: 日本学術振興会
  description: 超温度場スーパーチタン創成科学
- funder_name: 公益財団法人軽金属奨学会
  description: 教育研究資金･研究補助金

## 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: 9b537558-6ccc-4766-baf7-62488a6679af
  filename: 20250724AM_Abstrac_Jiyebeen_F.pdf
  content_type: application/pdf
  size: 248819
  md5: c0045e33d647e29df2186396160cb228

## Thumbnail

fileset_id: 9b537558-6ccc-4766-baf7-62488a6679af
filename: 20250724AM_Abstrac_Jiyebeen_F.pdf