Author： Lee Y.-J. Lee I.-K. Wu S.-C. Kung M.-C. Chou C.-P.
Publisher： Maney Publishing
ISSN： 1743-2936
Source： Science and Technology of Welding & Joining, Vol.12, Iss.3, 2007-04, pp. : 266-273
Disclaimer: Any content in publications that violate the sovereignty, the constitution or regulations of the PRC is not accepted or approved by CNPIEC.
Abstract
Seamless tubing of C-250 maraging steel manufactured by the flow forming technique was joined by the electron beam welding process. Various post-welding heat treatments were conducted to improve the overall mechanical properties of the welded tubing. For the 480°C/6 h/air cooling post-weld aging treated maraging steel, a significant increment of 11% reversion austenite was present in the weld metal. Only the tensile strength of this aging treated metal met the required specification while its percentage elongation reached only 50% of the specification, attaining only 35% of the strength of the parent metal. For the post-welded solution + aging treated maraging steel, only the yield strength met the specification. Moreover, a significant amount of reversion austenite pools was also present at the grain boundaries of the material located at the weld metal. Although the homogenisation treatment could improve the hardness of the weld metal, it failed to have the tensile strength of the steel met the specification.
Related content
By Huang C.C Pan Y.C Chuang T.H
Journal of Materials Engineering and Performance, Vol. 6, Iss. 1, 1997-02 ,pp. :
Access to resources
Recommend
By Kumar D. Siva Sinha P. P. Prabhu N. Prabhugaunkar G. V.
Science and Technology of Welding & Joining, Vol. 10, Iss. 2, 2005-04 ,pp. :
By Liu Jie Ventzke Volker Staron Peter Schell Norbert Kashaev Nikolai Huber Norbert
Metallurgical and Materials Transactions A, Vol. 45, Iss. 1, 2014-01 ,pp. :