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高Mo奥氏体不锈钢动态变形力学行为研究

徐有容 , 顾清 , 王德英 , 顾菊芳 , 瞿天才

金属学报

采用Formastor-Press热加工模拟试验机,研究了00Cr20Ni18Mo6Cu[N]奥氏体不锈钢动态变形时的力学行为。获得在热变形条件下该钢种热变形方程式,并求出峰应变ε_p,峰应力σ_p和温度补偿应变速率Z间的关系式以及其形变激活能。

关键词: 热变形 , austenite stainless steel , peak strain , peak stress , dynamic behaviour

混凝土/纤维增强树脂梁裂纹损伤的诊断

贺跃进 , 孙学红 , 张恒 , 魏风春

材料导报

裂纹既是复合材料梁构件的主要损伤类型之一,也是构件失效的主要原因之一.材料产生裂纹时,由于内部能量分布的变化,对外显现的动态特性会发生明显变化.对健康构件试样和裂纹损伤试样进行了大量对比研究,找到了损伤状态下动态特性的特征分布,并以此为依据建立了裂纹损伤的诊断规则.

关键词: 复合材料梁 , 裂纹 , 动态特性 , 诊断规则

DYNAMIC MECHANICAL BEHAVIOURS OF HIGH Mo AUSTENITIC STAINLESS STEEL DURING HOT DEFORMATION

XU Yourong , GU Qing , WANG Deying , Shanghai University of Science and Technology , Shanghai , ChinaGU Jufang , Q U Tiancai , Shanghai Iron and Steel Research Institute , Shanghai , China XU Yourong , Professor , Department of Materials Science , Shanghai University of Science and Technology , Shanghai 201800 , China

金属学报(英文版)

The dynamic mechanical behaviours of super low carbon high Mo austenitic stainless steel (00Cr20Nil8Mo6CuN)during hot deformation have been studied by using Formaster-Press hot working simulator. The hot deformation equation, as well as the relationship between peak strain, peak stress and Zener-Hollman parameter, together with the deformation activation energy have been resulted through the experiments.

关键词: hot deformation , null , null , null , null

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