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HU Yanhua, CHEN Furong, XIE Ruijun, LI Haitao. Testing study on SW-CCT diagram of 12Cr1MoV steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (12): 41-44.
Citation: HU Yanhua, CHEN Furong, XIE Ruijun, LI Haitao. Testing study on SW-CCT diagram of 12Cr1MoV steel[J]. TRANSACTIONS OF THE CHINA WELDING INSTITUTION, 2010, (12): 41-44.

Testing study on SW-CCT diagram of 12Cr1MoV steel

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  • Received Date: July 26, 2009
  • Temperature was selected as variable to study phase transformation in weld metal of 12Cr1MoV steel and realized in-situ detection of temperature in weld metal.The maximum temperature and cooling rates during welding were acquired to form the simulation technology of 12Cr1MoV steel in weld metal,and the SW-CCT diagram of 12Cr1MoV steel were obtained by the thermal simulation equipment with extracted cooling rates.When the average cooling rate of t8/3 is under 1.7℃/s,the microstructure in weld metal of 12Cr1MoV steel is ferrite(F)+perlite(P)+bainite(B);under 4.7℃/s,the microstructure is P+B;under 33℃/s,the microstructure is B;over 33℃/s,the microstructure is martensite(M).The optical microstructures of typical cooling rates are coincident with the test results of SW-CCT.The Vikers hardness increases with the increasing of cooling rates.
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