doi: 10.1557/jmr.2016.126, Published by Materials Research Society with Cambridge University Press, 16 May 2016.
In the original publication of this article, Figs. 6(a) and 6(b) were missing a portion of the specimen figure. The corrected figure is shown below.
![](https://static.cambridge.org/binary/version/id/urn:cambridge.org:id:binary:20190128134940138-0313:S0884291418004326:S0884291418004326_fig6g.jpeg?pub-status=live)
FIG. 6. The surface morphology of 45 steel specimens obtained by 3D digital microscope (a) optical surface image after turning, (c) three-dimension surface morphology image after turning, (b) optical surface image treated by EUST, and (d) three-dimension surface morphology image treated by EUST.
The authors regret this error.