微观力学性能与元素分布间的跨尺度评价  

Cross scale assessment of micro-mechanical properties and element distribution

作　　者：冯光 邹宇明 赵雷[1,2] 孙晓飞 王海舟[1] 贾云海 Feng Guang;Zou Yuming;Zhao Lei;Sun Xiaofei;Wang Haizhou;Jia Yunhai(Testing Institute, Central Iron and Steel Research Institute, Beijing 100081,China;NCS Testing Technology Co.,Ltd.,Beijing 100081,China;Northeastern University, School of Materials Science and Engineering, Shenyang Liaoning 110819,China)

机构地区：[1]钢铁研究总院测试所,北京100081 [2]钢研纳克检测技术有限公司,北京100081 [3]东北大学材料科学与工程学院,辽宁沈阳110819

出　　处：《金属热处理》2019年第3期5-10,共6页Heat Treatment of Metals

基　　金：国家重点研发计划(2016YFB0700302);国家重大科学仪器设备开发专项(2017YFF0106208)

摘　　要：材料织构的原位力学性能(弹性模量、硬度)作为计算模拟和材料设计学中重构的基本参数至关重要。通过对高铬铸铁材料表面施加等静压得到显微组织的微区(纳米尺度)弹/塑性形变数据,从而实现样品表面织构力学参数的高通量跨尺度分布分析。同时,对映射区域应用光学显微镜、显微硬度仪、纳米压痕仪和扫描电镜进行微观组织及宏观力学性能的对比分析,所得数据与通过等静压试验所得结果一致。对比常规的测试方法,等静压技术不仅可无损、无腐蚀的得到表面织构的力学性能参数,还可得到高分辨跨尺度的微观组织图谱。The in-situ mechanical properties (modulus of elasticity and hardness) of material texture are very important as the basic parameters of computational simulation and reconstruction in material design. The elastic/plastic deformation data of micro-area (Nanoscale) of microstructure were obtained by applying isostatic pressure on the surface of high chromium cast iron,and the high-throughput cross-scale distribution analysis of mechanical parameters of surface texture of the specimens was realized. In addition,the microstructure and mechanical properties of the mapping region were analyzed by means of optical microscope,micro-hardness tester,Nano-indentation tester and scanning electron microscope,which were consistent with isostatic pressing data. Compared with the conventional testing methods,isostatic pressing can not only obtain mechanical properties of surface texture without damage and corrosion,but also obtain high resolution and cross-scale metallographic maps.

关 键 词：高铬白口铸铁(HCCIs) 等静压 高通量 微观组织 

分 类 号：O657.99[理学—分析化学]