本文選題：淬透性曲線 + 連續(xù)冷卻曲線��； 參考：《材料熱處理學報》2015年12期

【摘要】：針對厚度超過140 mm的厚大耐磨工件,設計一種C含量為0.67%~0.73%的Mn-Cr系高碳低合金耐磨鋼。利用DIL805A熱膨脹儀結合金相—硬度法,測得了該鋼的臨界點溫度A_(c1),A_(c3)以及Ms;并繪制了該材料的過冷奧氏體連續(xù)冷卻轉變曲線(CCT曲線);研究了過冷奧氏體連續(xù)冷卻過程中組織轉變規(guī)律;并且利用末端淬火實驗研究了該鋼的淬透性。結果表明:該鋼的CCT曲線大大右移,臨界冷卻速度為5℃/s;測得了該鋼淬透性曲線,淬透層深度達到36 mm,淬透性大大增加。
[Abstract]:A Mn-Cr high carbon low alloy wear-resistant steel with a C content of 0.67% and 0.73% was designed for the thick wear-resistant workpiece with a thickness of more than 140mm. Using DIL805A thermal expansion instrument combined with metallographic hardness method, The critical point temperature A / C _ 1 / A _ C _ (3) and Ms of the steel were measured, and the CCT curve of the supercooled austenite continuous cooling transformation curve was plotted, and the microstructure transformation law during the continuous cooling process of the supercooled austenite was studied. The hardenability of the steel was studied by end quenching experiment. The results show that the CCT curve of the steel is greatly shifted to the right, the critical cooling rate is 5 鈩，

本文編號：1964712