EFFECT OF MICROSTRUCTURE ON MECHANICAL PROPERTIES OF INCOLOY 907

Acta Metall Sin

1992, Vol. 28

Issue (1): 21-26 DOI:

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EFFECT OF MICROSTRUCTURE ON MECHANICAL PROPERTIES OF INCOLOY 907

XIE Yun;YANG Ke;ZHAO Xu;FAN Cungan;LI Yiyi Institute of Metal Research; Academia Sinica; Shenyang

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XIE Yun;YANG Ke;ZHAO Xu;FAN Cungan;LI Yiyi Institute of Metal Research; Academia Sinica; Shenyang. EFFECT OF MICROSTRUCTURE ON MECHANICAL PROPERTIES OF INCOLOY 907. Acta Metall Sin, 1992, 28(1): 21-26.

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Abstract Effect of microstructure on the mechanical properties of a precipitation strengthening Fe--Ni--Co based low expansion alloy, Incoloy 907, has been investigated under different heat treatments. the dispersed γ phase is found to be the principal strengthening phase in the alloy. The microstructure of the alloy with even dispersed fine γ' phase seems to have the best match of its mechanical properties. However, it will be worsened if the alloy aged at some higher temperature or overaged to precipitate needle--like ε phase.

Key words: precipitation strengthening Incoloy microstructure mechanical property

Received: 18 January 1992

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https://www.ams.org.cn/EN/ OR https://www.ams.org.cn/EN/Y1992/V28/I1/21

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