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Effect of tungsten on microstructure and properties of high chromium cast iron
School of Materials Science and Engineering, Zhengzhou University, PR China.ORCID iD: 0000-0001-7560-6232
School of Materials Science and Engineering, Zhengzhou University, PR China.
School of Materials Science and Engineering, Zhengzhou University, PR China.
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2012 (English)In: Materials & design, ISSN 0264-1275, E-ISSN 1873-4197, Vol. 39, p. 303-308Article in journal (Refereed) Published
Abstract [en]

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, p. 303-308
National Category
Tribology (Interacting Surfaces including Friction, Lubrication and Wear)
Identifiers
URN: urn:nbn:se:kth:diva-169691DOI: 10.1016/j.matdes.2012.02.048ISI: 000303113900035OAI: oai:DiVA.org:kth-169691DiVA, id: diva2:824532
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QC 20150622

Available from: 2015-06-22 Created: 2015-06-22 Last updated: 2018-01-11Bibliographically approved

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Publisher's full texthttp://dx.doi.org/10.1016/j.matdes.2012.02.048

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Lv, Yezhe

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