Pearlite in ultrahigh carbon steels: Heat treatments and mechanical properties
Pearlite in ultrahigh carbon steels: Heat treatments and mechanical properties
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DOI：
10.1007/bf02647751
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发表时间：
1996
期刊：
影响因子：
--
通讯作者：
E. Taleff;C. Syn;D. Lesuer;O. Sherby
中科院分区：
文献类型：
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作者：
E. Taleff;C. Syn;D. Lesuer;O. Sherby
研究了碳含量分别为1.5wt%和1.8wt%的两种超高碳钢合金。这些材料被加工成完全球化的组织，然后进行热处理形成珠光体。通过室温拉伸试验评价了热处理后材料的力学性能。利用过共析奥氏体渗碳体向珠光体转变，可获得不同片层间距的珠光体组织。珠光体钢的屈服强度与基于片层间距和珠光体团大小的预测关系相关。珠光体片层间距的减小提高了屈服强度和极限强度，降低了拉伸塑性。结果表明，固溶合金化对珠光体钢的强度有很大影响。
Two ultrahigh carbon steel (UHCS) alloys containing 1.5 and 1.8 wt pct carbon, respectively, were studied. These materials were processed into fully spheroidized microstructures and were then given heat treatments to form pearlite. The mechanical properties of the heat-treated materials were evaluated by tension tests at room temperature. Use of the hypereutectoid austenite-cementite to pearlite transformation enabled achievement of pearlitic microstructures with various interlamellar spacings. The yield strengths of the pearlitic steels are found to correlate with a predictive relation based on interlamellar spacing and pearlite colony size. Decreasing the pearlite interlamellar spacing increases the yield strength and the ultimate strength and decreases the tensile ductility. It is shown that solid solution alloying strongly influences the strength of pearlitic steels.