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1篇 您的检索式:作者名="Xunwei Zuo"
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1Dynamic Compression Behavior and Microstructure of a Novel Low-Carbon Quenching-Partitioning-Tempering Steel显示文摘A 0.2C-1.5Mn-1.5Si-0.6Cr-0.05Nb(wt%) steel is treated respectively by novel quenching-partitioning-tempering(Q-P-T) process and traditional quenching and tempering(Q&T) process for comparison. X-ray diffraction analysis indicates that Q-P-T steel has about 10% retained austenite, but Q&T steel hardly has one. With the increase of compression strain rate from 7 9 102 to 5 9 103s-1, the flow stress of Q-P-T steel increases, which demonstrates the positive strain rate effect, but does not exist in Q&T steel. The characterization of scanning electron microscopy indicates that a large number of long, straight martensite laths in Q-P-T steel will bend or be destroyed by large compressive strain of 35%at 5 9 103s-1. However, relative small compressive strain of about 5% at 7 9 102s-1almost does not have any effect on the original lath morphology. The characterization of transmission electron microscopy further reveals the origin of the positive strain rate effect and the microstructural evolution during dynamic compressive deformation.Qingguo Hao Ying Wang Xiaoshuai Jia Xunwei Zuo Nailu Chen Yonghua Rong 2014Acta Metallurgica Sinica(English Letters)2014,27,3:5
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