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contributor authorGang Ma
contributor authorXiang Ling
date accessioned2017-05-09T00:46:39Z
date available2017-05-09T00:46:39Z
date copyrightJune, 2011
date issued2011
identifier issn0094-9930
identifier otherJPVTAS-28546#034501_1.pdf
identifier urihttp://yetl.yabesh.ir/yetl/handle/yetl/147477
description abstractUltrasonic impact treatment (UIT) can be used to create a thin nanostructured surface layer that plays a significant role in enhancing the overall strength, fatigue life, and corrosion resistance of the treated material. The hardness and elastic modulus of surface nanostructured 304 stainless steel treated by UIT have been investigated by nanoindentation and microhardness measurements. The hardness of the top nanostructured surface layer and its elastic modulus are about 38% and 30% higher, respectively, than those of the bulk material in the nanohardness testing. Also, the hardness is increased by about 23% in the Vickers microhardness testing. The nanohardness of the nanostructured surface layers decreases with depth and then trends to stable values. A hardened layer is found in the impact zone and the thickness is approximately 450–500 μm. All results demonstrated that the surface nanocrystallization can effectively enhance the mechanical properties of the 304 stainless steel.
publisherThe American Society of Mechanical Engineers (ASME)
titleStudy on Hardness and Elastic Modulus of Surface Nanostructured 304 Stainless Steel Using Two Mechanical Methods
typeJournal Paper
journal volume133
journal issue3
journal titleJournal of Pressure Vessel Technology
identifier doi10.1115/1.4002554
journal fristpage34501
identifier eissn1528-8978
keywordsElastic moduli
keywordsMicrohardness
keywordsStainless steel
keywordsNanoindentation
keywordsMechanical properties
keywordsTesting
keywordsThickness AND Measurement
treeJournal of Pressure Vessel Technology:;2011:;volume( 133 ):;issue: 003
contenttypeFulltext


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