In the present work, commercial pure titanium (CP-Ti) samples were subjected to surface mechanical attrition treatment (SMAT) under different durations in order to improve surface properties and produce an ultrafine grain layer. Cross section and surface of SMATed samples were analyzed through optical microscopy (OM) and scanning electron microscopy (SEM) methods. The finest grain size on surface, measured with X-ray diffraction (XRD) test, was 12.2 nm. While the initial grain size was measured to be averagely 70 μm. Hardness of SMATed samples increased by 2.8 times. Increase in hardness was due to plastic deformation and work-hardening. SMAT led to improvement of wear properties in CP-Ti so that its friction coefficient decreased by 66%. On the other hand, wear rate of CP-Ti samples decreased by about 60%. According to the established relationships between hardness and wear rate, increase in surface hardness and creation of a deformed layer led to reduction of wear rate. Surface roughness continuously increased with SMAT. Surface roughness after SMAT was increased by almost 6 times. Increase in surface roughness was due to impact of balls on samples surfaces leading to formation of valleys and peaks.
Tribology International – Elsevier
Published: Mar 1, 2018
It’s your single place to instantly
discover and read the research
that matters to you.
Enjoy affordable access to
over 12 million articles from more than
10,000 peer-reviewed journals.
All for just $49/month
Read as many articles as you need. Full articles with original layout, charts and figures. Read online, from anywhere.
Keep up with your field with Personalized Recommendations and Follow Journals to get automatic updates.
It’s easy to organize your research with our built-in tools.
Read from thousands of the leading scholarly journals from SpringerNature, Elsevier, Wiley-Blackwell, Oxford University Press and more.
All the latest content is available, no embargo periods.
“Hi guys, I cannot tell you how much I love this resource. Incredible. I really believe you've hit the nail on the head with this site in regards to solving the research-purchase issue.”Daniel C.
“Whoa! It’s like Spotify but for academic articles.”@Phil_Robichaud
“I must say, @deepdyve is a fabulous solution to the independent researcher's problem of #access to #information.”@deepthiw
“My last article couldn't be possible without the platform @deepdyve that makes journal papers cheaper.”@JoseServera