The role of pore structures on the fatigue properties of additively manufactured porous tantalum scaffolds produced by electron beam powder bed fusion

Guo, Yu; Chen, Chao; Tan, Liming; Wang, Qiangbing; PAN, Yan-ming; Zhu, Hai‐Liang; Zhou, Kechao

doi:10.1016/j.jmrt.2022.06.096

Cited by 17 publications

(6 citation statements)

References 28 publications

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“…(II) The figures demonstrate a stable plateau stage, indicated by the green area, that extends over a wide range of cycles. During this stage, cyclic stress loading remains relatively constant, and the accumulation of strain occurs slowly 23 . (III) A rapid strain accumulation stage as shown in the blue area in Figure 4A,C,E.…”

Section: Resultsmentioning

confidence: 98%

“…The fatigue strain curves consist of three characteristic stages: (I) a rapid increase of strain at the initial period as presented by the yellow area in the Figure 4B,D,F. In the presence of short loading times, the porous Ti‐15Mo alloys experience a rapid increase in strain attributed to the sudden application of external load 23 . (II) The figures demonstrate a stable plateau stage, indicated by the green area, that extends over a wide range of cycles.…”

Section: Resultsmentioning

confidence: 99%

“…As the cyclic number increases, fatigue failure ensues, leading to a substantial reduction in the load‐bearing capacity of the scaffold. The corrosion fatigue life of porous structures is commonly quantified by the number of fatigue times corresponding to N C 23 as marked in Figure 4, which is defined as the abrupt strain point of corrosion fatigue.…”

Section: Resultsmentioning

confidence: 99%

“…In the presence of short loading times, the porous Ti-15Mo alloys experience a rapid increase in strain attributed to the sudden application of external load. 23 (II) The figures demonstrate a stable plateau stage, indicated by the green area, that extends over a wide range of cycles. During this stage, cyclic stress loading remains relatively constant, and the accumulation of strain occurs slowly.…”

Section: Corrosion Fatigue Propertiesmentioning

confidence: 98%

“…During this stage, cyclic stress loading remains relatively constant, and the accumulation of strain occurs slowly. 23 (III) A rapid strain accumulation stage as shown in the blue area in Figure 4A,C,E. As the cyclic number increases, fatigue failure ensues, leading to a substantial reduction in the load-bearing capacity of the scaffold.…”

Section: Corrosion Fatigue Propertiesmentioning

confidence: 99%

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Corrosion fatigue behavior of continuous gradient porous Ti‐15Mo alloy prepared by selective laser melting

Chen,

Zhou

et al. 2024

Fatigue Fract Eng Mat Struct

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In this work, porous Ti‐15Mo scaffolds with different porosity gradient structures (uniform gradient structures [U‐BCC], level gradient structures [LG‐BCC], and vertical gradient structures [VG‐BCC]) were fabricated by selective laser melting, and the corrosion fatigue testing in Hank's solution was conducted for the first time. The fatigue strength order, when considering the same fatigue life, follows the sequence of LG‐BCC structure > U‐BCC structure > VG‐BCC structure. Cyclic ratcheting is a prominent factor leading to fatigue failure. The sequence of crack initiation and propagation in the latter stage of corrosion fatigue can be listed as follows: LG‐BCC structure < U‐BCC structure < VG‐BCC structure. During the corrosion fatigue process, the grain refinement occurs, and the deformation twinning is generated, leading to a dissipation of energy and an increase of the fatigue resistance. The corrosive effect of Hank's solution induces the surface roughening of the sample, accelerating crack initiation and propagation.

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Section: Resultsmentioning

confidence: 98%

Section: Resultsmentioning

confidence: 99%

Section: Resultsmentioning

confidence: 99%

Section: Corrosion Fatigue Propertiesmentioning

confidence: 98%

Section: Corrosion Fatigue Propertiesmentioning

confidence: 99%

See 3 more Smart Citations