合金化对高镍铬钼铸铁合金凝固组织及硬度的影响

Hot Working Technology(2019)

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Abstract
对高镍铬钼铸铁合金进行了合金化处理实验,研究了V、Nb合金元素对该合金凝固组织、碳化物尺寸和分布及硬度的影响规律.结果表明,当钒和铌元素含量超过1%时会导致合金凝固组织中碳化物变得粗大,碳化物由针状变成条状、鱼骨状以及块状;同时下贝氏体组织转变充分并长大,合金的硬度不断提高,但是该合金的硬度均匀性变差.
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