铸造高速钢共晶碳化物呈网状分布于晶界,其韧性受到削弱,使铸造高速钢的生产和应用受到限制.变质处理是改善共晶碳化物形态和分布,扩大铸造钢应用的有效途径.本文介绍变质处理对高速钢组织和性能的影响,提出进一步推广使用变质铸造钢需重视一些问题.
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