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cavitation corrosion

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Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001486
EISBN: 978-1-62708-234-1
... of the piston. The exact mechanism of cavitation damage is not entirely clear. Two schools of thought have developed, one supporting an essentially erosive, and the other an essentially corrosive, mechanism. Measures to prevent, or reduce, cavitation damage should be considered firstly from the aspect of design...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.chem.c9001718
EISBN: 978-1-62708-220-4
.... No material or manufacturing defects were found to explain the different service performance of the two impellers. Microstructure, microhardness and material chemistry are consistent with the specified material. Examination reveals the damage mechanism to be corrosion-enhanced cavitation erosion, the most...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006794
EISBN: 978-1-62708-295-2
...-Corrosion Cavitation-corrosion is another type of erosion-corrosion attack on a metal surface, caused by microjet impingement and via bubble collapse ( Ref 6 , 7 ). When a bubble (which can have both vapor and gas content) in a liquid collapses due to the change in pressure of the surrounding medium...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001779
EISBN: 978-1-62708-241-9
.... Ariely S. , Khentov A. : Erosion corrosion of pump impeller of cyclic cooling water system . Eng. Fail. Anal. 13 , 925 – 932 ( 2006 ) 10.1016/j.engfailanal.2005.07.012 11. Dojcinovic M. , Volkov-Husovic T. : Cavitation damage of the medium carbon steel: implementation...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0047441
EISBN: 978-1-62708-234-1
... with the classic spongy appearance of cavitation. Two changes were proposed: streamlining the part to avoid abrupt changes in fluid flow; and a change in alloy to a more corrosion-resistant material (304 or preferably 316) to increase the tenacity of protective films. Cavitation Design Supports 8620...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003569
EISBN: 978-1-62708-180-1
... = 110 cS). Source: Ref 35 Ceramics Ceramics are used as components of hydraulic machinery and valves because of their superior corrosion, abrasion, and solid-particle erosion resistance. However, damage can occur by cavitation erosion. Some ceramics are more sensitive to cavitation than...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001604
EISBN: 978-1-62708-234-1
... vapor environment. However, failure analysis showed that cavitation erosion was the responsible failure mechanism, not corrosion as might be expected. Cavitation erosion Hardness Microstructure SO2 316 UNS S31600 1006 UNS G10060 Erosive wear Erosion - corrosion Cavitation wear...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.petrol.c9001247
EISBN: 978-1-62708-228-0
... surface of the unmarked sample. 250 × Local thinning, cavitation and ductile deformation markings associated with the unmatched sample taken from the centre of the fire showed that the tube ruptured as a result of overheating. The corrosion product and precipitation effects at the inner and outer...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c9001202
EISBN: 978-1-62708-234-1
... (shrinkage zone in Fig. 5 ). 20 × Fig. 5 Cavitation pits (←) and porous zones ↘ in an unetched transverse section from an as yet unfractured region of impeller I. 2.5 × Fig. 6 shows a section of a cavitation region. The absence of corrosion products confirms that the surface here has been...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.modes.c0046422
EISBN: 978-1-62708-234-1
... as erosion-producing conditions. Dynamometers Stator blades CA-6NM UNS J91540 Erosive wear Corrosive wear Cavitation wear Figure 1 shows severely eroded stator vanes of a hydraulic dynamometer for a steam-turbine test facility. The stator was cast from a copper-manganese-aluminum alloy...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003568
EISBN: 978-1-62708-180-1
... materials with the aid of models and equations. It presents three examples of erosive wear failures, namely, abrasive erosion, erosion-corrosion, and cavitation erosion. abrasive erosion brittle materials cavitation erosion ductile materials erosion erosion corrosion EROSION...
Series: ASM Failure Analysis Case Histories
Publisher: ASM International
Published: 01 June 2019
DOI: 10.31399/asm.fach.power.c9001679
EISBN: 978-1-62708-229-7
... portion of the pump has been seen. In addition, erosion and cavitation inside the throat of the venturi tube and corrosion on the other surface of the venturi tube has been observed. Several measures are being examined in an attempt to improve the performance of these pumps. These measures, as well...
Series: ASM Handbook
Volume: 11
Publisher: ASM International
Published: 15 January 2021
DOI: 10.31399/asm.hb.v11.a0006795
EISBN: 978-1-62708-295-2
... of industries. This article describes the processes involved in erosion of ductile materials, brittle materials, and elastomers. Some examples of erosive wear failures are given on abrasive erosion, liquid impingement erosion, cavitation, and erosion-corrosion. In addition, the article provides information...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003570
EISBN: 978-1-62708-180-1
... Fig. 1 Exposure to vibratory cavitation of normalized AISI 1020 steel. (a) Damage after 5 min. (b) Material removal after 10 min Fig. 2 Vibratory cavitation erosion of CA-6NM martensitic stainless steel. (a) Deformation rumpling and pitting at lath boundaries. (b) Early stage...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001084
EISBN: 978-1-62708-214-3
... with a nominal 2% Cu addition for improved resistance to cavitation. The hardness was specified to range from 248 to 302 HB (equivalent to 24 to 32 HRC). Specimen Selection The impeller was received in the as-fractured condition, along with the detached piece that contained the mating fracture surface...
Series: ASM Failure Analysis Case Histories
Volume: 1
Publisher: ASM International
Published: 01 December 1992
DOI: 10.31399/asm.fach.v01.c9001087
EISBN: 978-1-62708-214-3
... cause of failure was cavitation and vortexing between the rotor and the lining. The root cause of the failure was the conversion from lime to limestone slurry without appropriate modification of the pump. Conversion to the limestone slurry resulted in fluid dynamics outside the operational limits...
Series: ASM Failure Analysis Case Histories
Volume: 3
Publisher: ASM International
Published: 01 December 2019
DOI: 10.31399/asm.fach.v03.c9001809
EISBN: 978-1-62708-241-9
... B). NAB alloys are known for their excellent corrosion and cavitation resistance, which allows them to be extensively used in numerous seawater applications as impellers, propellers, tubing, etc. NAB alloys have 5–12% aluminum and up to 6% each of nickel and iron. The NAB’s UNS designation...
Series: ASM Failure Analysis Case Histories
Volume: 2
Publisher: ASM International
Published: 01 December 1993
DOI: 10.31399/asm.fach.v02.c9001276
EISBN: 978-1-62708-215-0
... and ferrite. However, the internal surface on the thicker regions of the rings exhibited significant deposit buildup, where the thinned regions showed none. No significant corrosion or pitting was observed on either the internal or external surface of the piping. The lack of internal deposits on the affected...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0003524
EISBN: 978-1-62708-180-1
... Electrochemical Tests Tests for Corrective Action Wear Failures Simulated-Use Tests Types of Wear Abrasive Wear Erosive Wear Adhesive Wear Follow-Up on Recommendations Key Guidelines Fretting Cavitation Liquid-Droplet Impingement Corrosive Wear Lubricants Rolling...
Series: ASM Handbook Archive
Volume: 11
Publisher: ASM International
Published: 01 January 2002
DOI: 10.31399/asm.hb.v11.a0001809
EISBN: 978-1-62708-180-1
... and outer rings should both be made from 17-4 PH (AISI type 630) stainless steel, which is more resistant to corrosive marine environments than either type 440C or type 416 stainless steel. Cavitation In certain areas of fluid flow along a solid boundary, high pressures and low pressures can develop...