Ultrasound treatment of centrifugally atomized 316 stainless steel powders

Rawers, J. C.; McCune, R. A.; Dunning, John S.

doi:10.1007/bf02650263

Cited by 15 publications

(10 citation statements)

References 7 publications

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“…Cutting and testing of materials using a simple cavitating nozzle was proposed [24], and material properties in a cavitation tunnel were improved by cavitation impact [25]. The residual stress on the surface of metal powders was changed by ultrasonic cavitation [26]. However, the treatment area using cavitation impacts is limited when cavitation is produced by cavitation tunnel and/or ultrasonic cavitation.…”

Section: History Of Cavitation Peeningmentioning

confidence: 99%

“…At bubble collapse, a shockwave was induced and propagated, then the black circle region, i.e., shock ring, shows where a shockwave was propagated with collapsing the bubble. Compressive residual stress was introduced into stainless steel powders by ultrasonic cavitation [26], and a machining process used created using ultrasonic cavitation [71]. Compressive residual stress was also introduced into metallic materials [72,73].…”

Section: Ultrasonic Cavitationmentioning

confidence: 99%

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Cavitation Peening: A Review

Soyama

2020

Metals

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The most popular surface modification technology used to enhance the mechanical properties of metallic materials is shot peening. Shot peening improves fatigue life and strength by introducing local plastic deformation pits. However, the pits increase surface roughness, which is a disadvantage for fatigue properties. Recently, cavitation peening, in which cavitation bubble collapse impacts are used, has been developed as an advanced surface modification technology. The advantage of cavitation peening is the lesser increase in surface roughness compared with shot peening, as no solid collisions occur in cavitation peening. In conventional cavitation peening, cavitation is generated by injecting a high-speed water jet into water. However, cavitation peening is different from water jet peening, in which water column impacts are used. In the present review, to avoid confusing cavitation peening and water jet peening, fundamentals and mechanisms of cavitation peening are described in comparison to water jet peening, and the effects and applications of cavitation peening are reviewed compared with the other peening methods.

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Section: History Of Cavitation Peeningmentioning

confidence: 99%

Section: Ultrasonic Cavitationmentioning

confidence: 99%

Cavitation Peening: A Review

Soyama

2020

Metals

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“…Recently cavitation impacts have been applied in surface modification such as peening [2][3][4], and the high temperature effect has also been used for making amorphous powder [5]. These mechanical and thermal effects can improve the corrosion resistance of a material.…”

Section: J O U R N a L O F M A T E R I A L S S C I E N C E L E T T E mentioning

confidence: 99%

Untitled

Soyama

Asahara

2000

Journal of Materials Science Letters

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“…The introduction of compressive residual stress has been demonstrated using a cavitation tunnel (14) and ultrasonic vibration (15) . However, the treatment area in each case was limited and it was difficult to increase the peening strength of the cavitation impact.…”

Section: Introductionmentioning

confidence: 99%

Enhancing the Aggressive Strength of a Cavitating Jet and Its Practical Application

Soyama

Takakuwa

2011

JFST

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A cavitating jet is a useful tool for the practical application of cavitation. Cavitation impact arises when bubbles collapse and can be utilized to modify the surfaces of materials as an alternative to shot peening. Peening methods using cavitation impact are called "cavitation peening" or "cavitation shotless peening", as shot is not required. In cavitation peening, cavitation is generated by injecting a high-speed water jet into water, i.e., a cavitating jet. In practical applications, it is very important to maximize the aggressive strength of the jet. In the present paper, in order to do this, the outlet geometry of the nozzle of a cavitating jet was optimized. High-speed observations were carried out to investigate any instability in the jet. The introduction of compressive residual stress into stainless steel was demonstrated to show the effect of cavitation peening. Scaling-and velocity-effects, i.e., the effect of the injection pressure, at the nozzle throat was also examined. It was shown that a large cavitating jet at low injection pressure was more aggressive than a small jet at high injection pressure, for the same power.

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Ultrasound treatment of centrifugally atomized 316 stainless steel powders

Cited by 15 publications

References 7 publications

Cavitation Peening: A Review

Cavitation Peening: A Review

Untitled

Enhancing the Aggressive Strength of a Cavitating Jet and Its Practical Application

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