Have a look at these! ;)
http://www.msm.cam.ac.uk/phase-trans/2000/phd.htmlYou could also get some ideas from here as well:
http://cst-www.nrl.navy.mil/lattice/Here are some tools you can use in writing your thesis:
http://aluminium.matter.org.uk/content/html/eng/default.asp?catid=&pageid=1http://aluminium.matter.org.uk/aluselect/default.asphttp://www.matter.org.uk/diffraction/http://www.matter.org.uk/glossary/http://www.matter.org.uk/solidification/http://www.matter.org.uk/steelmatter/http://www.steeluniversity.org/content/html/eng/default.asp?catid=1&pageid=1016899460http://www.matter.org.uk/stereography/http://www.matter.org.uk/tem/http://www.matter.org.uk/authors.htmhttp://www.matter.org.uk/links.htmhttp://ci.nii.ac.jp/cinii/servlet/DirTop?lang=enhttp://www.engineersedge.com/engineering-analysis.htmhttp://www.engineersedge.com/engineering/Engineering_Downloads/Engineering_Forms_Documents/http://www.engineersedge.com/applications-design.htmhttp://www.engineersedge.com/definitions.htmhttp://www.engineersedge.com/mathematics_menu.shtmlhttp://www.engineersedge.com/calculators.htmhttp://www.bnl.gov/RHIC/http://cdsweb.cern.ch/record/1177862https://lasers.llnl.gov/http://www.iter.org/mach/Pages/Tokamak.aspxhttp://irfu.cea.fr/en/http://bunter.msm.cam.ac.uk/phase-trans/2006/Kemp.thesis.pdfhttp://www.hrsgdesign.com/design0.htmhttp://sciencelinks.jp/component/option,com_sljlinks/Itemid,222/http://www.msm.cam.ac.uk/phase-trans/movies.htmlhttp://www.constructalia.com/en_EN/index.jspTHis one isn't free, but the subscription is reasonable:
http://www.knovel.com/web/portal/browse/display?_EXT_KNOVEL_DISPLAY_bookid=776http://watch.mit.edu/http://ocw.mit.edu/OcwWeb/web/home/home/index.htmhttps://engineering.purdue.edu/ME/http://www.mrs.org/s_mrs/sec_subscribe.asp?CID=2986&DID=131688http://www.engr.sjsu.edu/WofMatE/Metals&Alloys.htmhttp://www.nidi.org/index.cfm/ci_id/10/la_id/1.htmhttp://www.worldstainless.org/http://www.euro-inox.org/http://sti.srs.gov/fulltext/ms9800869/ms9800869.htmlhttp://www.psc.edu/science/Olson/Olson.html#onehttp://www.psc.edu/science/Olson/Olson-cracks.htmlhttp://www.psc.edu/science/Olson/Olson-quench.htmlhttps://qir.kyushu-u.ac.jp/dspace/handle/2324/12825https://engineering.purdue.edu/BTPFL/http://www.aluminum.org/index.htmhttp://www.alcotec.com/http://weldinghistory.org/http://www.ssina.com/publications/sssa.htmlhttp://www.worldstainless.org/About+stainless/The+SS+Library.htmThere's more, but I'm going to eat dinner now so this should do for now! ;)
Of course, you also have the subjects of: welding involved in various fusion energy projects such as CERN, NIL and K-Star in South Korea along with the future ITER project as well, welding technologies used in developing wind and solar energy and clean coal technology projects, welding components together for the fabrication of carbon sequestration facilities, advances in aerospace materials and joining methods, etc.,welding advanced structural materials, welding consumables developments, advanced welding processes, hybrid welding and joining processes, Post Weld Heat Treatment procedures for advanced ferrous & non-ferrous metals, etc...
There are more topics that you can choose from besides these,and you are only limited by your imagination as well as the current research out there! ;) I hope this will give you somewhere to start thinking on your own!!! :) :) :) P.S. I almost forgot about this one:
http://www.materials.ac.uk/search/result.asp?look=steel&hi=-1&acdb=tresRespectfully,
Henry