6Yokell S.Expanded,and welded-and-expanded tube-totube sheet joints[J].Journal of Pressure Vessel Technology,1992.114:157-165.
7Almeidaa B P P,Alvesb M L,Rosaa P A R,et al.Expansion and reduction of thin-walled tubes using a die:experimental and theoretical investigation[J].International Journal of Machine Tools&Manufacture,2006.(46):1643-1652.
8Tang Ding,Peng Yinghong,Li Dayong.Experimental and numerical study on expansion forming of thickwalled micro-groove tube[J].Journal of Mechanical Engineering Science,2009.5(223):689-697.