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固溶時效后高氮奧氏體不銹鋼的物理化學相分析

Physicochemical phase analysis of high nitrogen austenitic stainless steels after solution treatment and aging

  • 摘要: 采用物理化學相分析技術研究了高氮奧氏體不銹鋼固溶時效后的碳、氮化物析出行為,確定了析出相的類型、粒度分布、含量及組成結構式.結果表明:氮含量低的1Cr22Mn15N0.6以M23C6型碳化物析出為主,氮含量高的1Cr22Mn15N0.9以(CrFe)2N1-x型氮化物析出為主,高氮奧氏體不銹鋼中析出物的總量隨時效時間的延長而增加.

     

    Abstract: Precipitation of nitrides and carbides in high nitrogen austenitic stainless steels after solution treatment and aging was investigated by using a physicochemical phase analysis method. The character, particle size distribution, content and structural formulae of phases in the alloy were determined. It is shown that the precipitate is mostly M23C6 carbide in 1Cr22Mn15N0.6 steel and (CrFe)2N1-x nitride in 1Cr22Mn15N0.9 steel respectively, and its volume fraction increases with prolonging the aging time.

     

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