Please use this identifier to cite or link to this item: http://hdl.handle.net/10397/23091
Title: Cavitation erosion and damage mechanisms of alloys with duplex structures
Authors: Kwok, CT
Man, HC 
Cheng, FT
Keywords: α + β Brass
Austenitic stainless steel
Cavitation erosion
Grain size
Heat treatment
Mechanical properties
Super duplex stainless steel
Issue Date: 1998
Publisher: Elsevier
Source: Materials science and engineering. A, Structural materials : properties, microstructure and processing, 1998, v. 242, no. 1-2, p. 108-120 How to cite?
Journal: Materials science and engineering. A, Structural materials : properties, microstructure and processing 
Abstract: The cavitation erosion characteristics of alloys with duplex structures such as super duplex stainless steel (UNS S32760) and α + β brass (Cu-40%Zn) in 3.5% NaCl solution at 23°C were investigated by means of a 20 kHz ultrasonic vibrator at a peak-to-peak amplitude of 50 μm. Austenitic stainless steel (UNS S30400) with single phase structure was also investigated for comparison purpose. The effect of heat treatment on the cavitation erosion characteristics of these alloys was also studied. Heat treatment of brass and S30400 stainless steel increases the grain size and ductility, and decreases the mechanical strength of these alloys, leading to an increase of erosion loss. For S32760, the effect of heat treatment on the mechanical properties and grain size is minimal and therefore erosion loss is unaffected. Hardness, tensile strength, engineering strain energy and grain size of the heat-treated alloys correlate well with the cavitation erosion resistance Re by linear regression.
URI: http://hdl.handle.net/10397/23091
ISSN: 0921-5093
EISSN: 1873-4936
DOI: 10.1016/S0921-5093(97)00514-5
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