Effect of tungsten on microstructure and properties of high chromium cast iron
2012 (English)In: Materials & design, ISSN 0264-1275, Vol. 39, 303-308 p.Article in journal (Refereed) Published
In this study, effect of tungsten on microstructure and properties of high chromium cast iron was investigated.The experimental results indicated that tungsten distributed uniformly in the matrix and carbides.W carbides are composed of WC1x, W6C2.54 and CW3 and W2C. With the increase of tungstencontent, bulk hardness and matrix microhardness both increased gradually and reached the peak at62.62HRC and 913HV, respectively. All of the tungsten-containing alloys performed better than tungsten-freealloys in impact tests and alloys containing 1.03 wt% W showed the highest impact toughness at8.23 J cm2. Tungsten considerably improved the performance of high chromium cast iron on wearresistance and alloys containing 1.03 wt%Wincreased 205% compared to tungsten-free alloys. Therefore,tungsten can be used as an alloying element to increase the hardness and wear resistance without scarifyingimpact toughness in high chromium cast iron. Alloys containing 1.03 wt% tungsten showed theoptimum properties.
Place, publisher, year, edition, pages
Elsevier, 2012. Vol. 39, 303-308 p.
IdentifiersURN: urn:nbn:se:kth:diva-169691DOI: 10.1016/j.matdes.2012.02.048ISI: 000303113900035OAI: oai:DiVA.org:kth-169691DiVA: diva2:824532
QC 201506222015-06-222015-06-222015-06-22Bibliographically approved