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| 1 | 残留奥氏体对中碳双相钢冲击性能的影响显示文摘采用不同的热处理工艺研究了残留奥氏体对中碳双相钢冲击韧性的影响。利用金相显微镜、扫描电镜、透射电镜和摆锤式冲击试验机,对不同试样的显微组织与冲击韧性进行观察、检测和分析。试验结果表明:中碳贝氏体钢的冲击性能显著高于Q/P马氏体钢(室温冲击功是57J对应15J,-40℃冲击功是33J对应9J),可能的原因是贝氏体钢中薄膜状残留奥氏体,对裂纹扩展的阻止效应更显著。 | 史园园 胡锋 | 2015 | 中国冶金2015，25，1： | 11 |
| 2 | Tempering Behavior of Ductile 1700 MPa Mn-Si-Cr-C Steel Treated by Quenching and Partitioning Process Incorporating Bainite Formation显示文摘We obtained a good combination of strength and ductility in a 0.4C-2.0Mn-1.7Si-0.4Cr(wt%) steel,namely,~1.7 GPa of ultimate tensile strength and ~26% of elongation,by conducting a Q-P-T(quenching-partitioning- tempering) process incorporating the formation of carbide-free bainite. The tempering behavior of this steel was discussed by using experimental finding(scanning electron microscopy,X-ray diffraction(XRD),transmission electron microscopy and dilatometer) and CCE(constrained carbon equilibrium) modeling. The XRD results combined with CCE calculation prove that carbon partitioning from martensite to austenite occurs during tempering. Consequently,the thermodynamic stability of retained austenite is enhanced. This idea can be utilized to design novel Q-P-T processes in future. | Guhui Gao Han Zhang Xiaolu Gui Zhunli Tan Bingzhe Bai | 2015 | Journal of Materials Science & Technology2015，31，2： | 10 |
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