The Segregating Behavior of Alloying Elements Based on the Divorced Coincident Segregation in 5% Ni Steels by the Application of FE-TEM

この論文にアクセスする

この論文をさがす

著者

    • UEMORI Ryuji
    • Oita R & D Laboratories, Nippon Steel Corporation, Steel Research Laboratories, Nippon Steel Corporation

抄録

The segregation mechanism of alloying elements in prior austenitic grain boundaries of embrittled 5% Ni steels has been investigated by AES in previous works, while that of improved 5% Ni steels has not been clarified yet. In the present study, the segregating behavior of alloying elements in the improved 5% Ni steels has been elucidated for the first time by the application of FE-TEM with an emphasis on the effects of soluble Al on the suppression of temper embrittlement and hydrogen embrittlement. <br> It is consequently made clear by the application of FE-TEM-EDS that alloying elements tend to segregate coincidently to grain boundaries, occupying the opposite side of grain boundaries each other according to their interactions. The observed behavior is newly defined as the "divorced coincident segregation" in the present study, and is considered to result from the moderate site competitions in the deep potential well of McLean's equilibrium segregation. The results also show that the amount of {Al-(Si+Cr+Mn)} segregated in grain boundaries governs the resistance to the two types of embrittlement in 5% Ni steels under the condition of low impurities such as N, P and Sn.

収録刊行物

  • ISIJ international

    ISIJ international 38(2), 203-211, 1998-02-15

    The Iron and Steel Institute of Japan

参考文献:  14件中 1-14件 を表示

  • <no title>

    BRUSCATO R.

    Weld., Res. Suppl. 49, 148-s, 1970

    被引用文献1件

  • <no title>

    WADA T.

    Climax Molybdenum Co. of Michigan, 1975

    被引用文献2件

  • <no title>

    BRIANT C. L.

    Metall. Trans. A 10A, 1729, 1979

    被引用文献4件

  • <no title>

    KAMEDA J.

    Metall. Trans. A 12A, 31, 1981

    被引用文献1件

  • <no title>

    PORTER L. F.

    Temper Embrittlement in Steel(1967) 20, 1968

    被引用文献1件

  • <no title>

    CABRAL U. Q.

    C. R. Acad. Sci. (Paris) 260, 6887, 1965

    被引用文献1件

  • <no title>

    YOSHINO K.

    Jr. : Metall. Trans. 5, 363, 1974

    被引用文献1件

  • <no title>

    BRIANT C. L.

    Metall. Trans. 9A, 625, 1978

    被引用文献1件

  • <no title>

    MABUCHI H.

    Jr. : Proc. JIMIS-2, 1979

    被引用文献1件

  • <no title>

    Suppl. Trans. Jpn. Inst. Met. 21, 441, 1980

    被引用文献1件

  • <no title>

    MABUCHI H.

    Trans. Iron Steel Inst. Jpn. 22, 967, 1982

    被引用文献3件

  • <no title>

    TAKEDA Y.

    Jr. : Metall. Trans. 13A, 111, 1982

    被引用文献1件

  • <no title>

    MABUCHI H.

    Proc. on 38th Mechanical Working and Steel Processing Conf. 34, 611, 1997

    被引用文献2件

  • <no title>

    MABUCHI H.

    CAMP-ISIJ 10, 589, 1997

    被引用文献2件

各種コード

ページトップへ