摘要
Ahigh-carbonsteeljoint,SK5(0.84wt%C),wassuccessfullyweldedbyfrictionstirwelding(FSW),bothwithoutandwithagastorch,inordertocontrolthecoolingrateduringwelding.Afterwelding,theweldzonecomprisedgrayandblackregions,correspondingtomicrostructuralvariation:amartensitestructureandaduplexstructureofferriteandcementite,respectively.ThevolumefractionofthemartensitestructureandtheVickershardnessintheweldsweredecreasedwiththeusingofthegastorch,whichwasrelatedwiththelowercoolingrate.
出版日期
2011年02月12日（中国期刊网平台首次上网日期，不代表论文的发表时间）
