Method for strengthening chromium-nickel austenitic heat resistant steel through composition of multiple nanometer precipitated phases

Method for strengthening chromium-nickel austenitic heat resistant steel through composition of multiple nanometer precipitated phases

  • CN 103,643,152 A
  • Filed: 12/24/2013
  • Published: 03/19/2014
  • Est. Priority Date: 12/24/2013
  • Status: Active Application
First Claim
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1. by the method for multiple nanometer precipitated phase complex intensifying chromium nickle type austenitic high temperature steel, it is characterized in that, chemical composition quality % is 0.05-0.15%C, 24-26%Cr, 18.5-22%Ni, 3-6%Cu, 0.2-0.8%Nb, 0.10-1.0%N, surplus is Fe and inevitable impurity, raw material melting is prepared into alloy and hot-work is become a useful person, its thermal treatment process is solution treatment, i.e. shrend after 1150 ℃

  • of insulation 30min;

    Obtain multiple nanometer precipitated phase complex intensifying chromium nickle type austenitic high temperature steel;

    This steel grade causes nano level Nb(C, N after 1150 ℃

    of high temperature solid solutions are processed under 650-700 ℃

    of aging condition) type MX phase, NbCrN phase and the mutually common compound precipitation strength of rich Cu.

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