The Structure Investigation of A Fe-W(Mo)-Co(Ni) Age Hardening Tool Steel
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摘要: 用TEM-SEM、X射線及圖象分析法研究了Fe-W(Mo)-Co(Ni)系時效硬化工具鋼的相組成和組織。探討了合金的時效硬化機制,確認時效初期發生無位壘脫溶-調幅分解,形成具有周期構造的組織,它的成長速度非常緩慢,這是本系合金時效硬化迅速和過時效軟化遲緩的原因。Abstract: The phase constituent and structure of a Fe-W(Mo)-Co(Ni) age hardening tool steel were investigated by TEM-SEM, X-ray and image analysis. The mechanizm of age hardening indicated that the non-barrier precipitation-spinodal decomposition happened at the initial stage of age hardening to form a period structure, the growth of this structure was very slow, and it caused the fast hardening and slow softening in the aging process.
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Key words:
- tool steel /
- spinodal decomposition /
- age hardening
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