ISSN:
1662-9752
Source:
Scientific.Net: Materials Science & Technology / Trans Tech Publications Archiv 1984-2008
Topics:
Mechanical Engineering, Materials Science, Production Engineering, Mining and Metallurgy, Traffic Engineering, Precision Mechanics
Notes:
The present work investigates the influence of phosphorus addition on the sizedistribution of retained austenite in TRIP steels containing 0.01%, 0.09% and 0.14% phosphorus.The size of retained austenite is measured by means of neutron depolarization technique and opticalmicroscopy. It is found that the addition of phosphorous increases the size of the largerintergranular and inter-ferritic austenite grains and therefore also increases the volume fraction ofretained austenite due to the strengthening effect of phosphorous on the surrounding ferrite andbainite grains. For all phosphorous additions the most frequently observed austenite size is around0.2 μm, which is probably corresponds to the interlath film-type retained austenite. The averagegrain size from the neutron depolarization technique agrees in general with that from the opticalmicroscopy and it is suggested that the accuracy can be improved by further development of thedata analysis by taking into account the preferred shape and orientation of the austenite grains
Type of Medium:
Electronic Resource
URL:
http://www.tib-hannover.de/fulltexts/2011/0528/02/15/transtech_doi~10.4028%252Fwww.scientific.net%252FMSF.539-543.4321.pdf
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