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Semantic Scholar Open Access 2018 455 sitasi

Influence of defects, surface roughness and HIP on the fatigue strength of Ti-6Al-4V manufactured by additive manufacturing

Hiroshige Masuo Yuzo Tanaka Shotaro Morokoshi H. Yagura T. Uchida +2 lainnya
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Abstrak

Abstract The additive manufacturing (AM) is expected to be a promising manufacturing process for high strength or hard steels such as Ti-6Al-4V for the aerospace industry components having complex shapes. However, disadvantage or challenge of AM is presence of defects which are inevitably contained in the manufacturing process. This paper focuses on the effects of defects, surface roughness and Hot Isostatic Pressing (HIP) process on the fatigue strength of a Ti-6Al-4V manufactured by AM. Defects were mostly gas pores and those made by lack of fusion. Many defects which were formed at subsurface were eliminated by HIP and eventually HIP improved fatigue strength drastically to the level of the ideal fatigue limit to be expected from the hardness. Surface roughness had strong detrimental influence on fatigue strength. The method for estimating the effective size √areaeffmax of irregularly shaped defects and interacting adjacent defects was proposed from the viewpoint of fracture mechanics.

Topik & Kata Kunci

Materials Science

Penulis (7)

H

Hiroshige Masuo

Y

Yuzo Tanaka

S

Shotaro Morokoshi

H

H. Yagura

T

T. Uchida

Y

Y. Yamamoto

Y

Y. Murakami

Format Sitasi

APA MLA BibTeX
Masuo, H., Tanaka, Y., Morokoshi, S., Yagura, H., Uchida, T., Yamamoto, Y. et al. (2018). Influence of defects, surface roughness and HIP on the fatigue strength of Ti-6Al-4V manufactured by additive manufacturing. https://doi.org/10.1016/J.IJFATIGUE.2018.07.020

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Lihat di Sumber doi.org/10.1016/J.IJFATIGUE.2018.07.020
Informasi Jurnal
Tahun Terbit
2018
Bahasa
en
Total Sitasi
455×
Sumber Database
Semantic Scholar
DOI
10.1016/J.IJFATIGUE.2018.07.020
Akses
Open Access ✓