| 1. | Damage constitutive relationship for pearlitic steel with fine laminar microstructure 细片层状微结构珠光体材料损伤本构关系 |
| 2. | Ferritic - pearlitic steels for precipitation hardening from hot - working temperatures 热加工温度下沉淀硬化用铁素体-珠光体钢板材 |
| 3. | Ferritc - pearlitic steels for precipitation hardening from hot - working temperatures ; german version en 10267 : 1998 用于高工作温度的沉淀硬化铁氧-珠光体钢 |
| 4. | Damage constitutive relationship involving void shape variation for pearlitic steel with fine laminar microstructure 考虑微缺陷形状的细片层状珠光体钢的损伤本构模型 |
| 5. | 3 . on the present deformation condition , the cementite in pearlitic steel has more severe plastic deformation capability t - he max shear strain up to 1 . 9 . 4 C方式ecap变形条件使珠光体钢65mn中的渗碳体可以表现出很强的塑性变形能力? ?观察到的最大切变形达到1 . 9的等效真应变。 |
| 6. | In ecap route c , in order to accommodate the severe shear deformation the deformation form of lamellae cementite in pearlitic steel include periodical bending , periodical shearing and shearing fracture etc 在c方式ecap变形中,珠光体钢65mn中的渗碳体以周期性的弯曲变形,周期性的剪切变形,剪切断裂等形式协调ecap的强烈塑性变形。 |
| 7. | Most existing constitutive models do not take into account the interactions between different phases of pearlitic steel and cannot illustrate why such kind of materials has excerllent mechanical properties . it is , therefore , necessary to develop a new method , which can describe the macroscopic behavior , damage and failure of the materials and their micro structural dependence . in this paper , based on a non - classical theory of plasticity and the continuum damage mechanics , a damage evolution based on an ellipsoidal void model for mixed hardening materials is obtained 已有的关于珠光体钢的本构模型多难以考虑珠光体材料的微结构及其相互作用,难以解释珠光体材料何以具有较好的综合力学性能,因此有必要发展一种多层次的细观力学分析方法以研究此材料在复杂加载条件下计及微结构特征的宏观响应特性,使材料的强度、疲劳寿命的预测与其微结构及各组成相的损伤及微观应力应变演化规律联系起来,进而为材料微结构的设计提供依据。 |
| 8. | Equal channel angular processing of the pearlitic steel ( 0 . 65 wt . % c ) was successfully carried out at 650 with route c in this study , obtaining a total equivalent true strain ~ 5 . the microstructure evolution of pearlitic steel in ecap was investigated by means of transmission electron microscope and scanning electron microscope . the main results are as the following : 1 本研究成功地实现了c方式650珠光体钢65mnecap变形,累积等效真应变达到5 。并用透射电镜、扫描电镜研究了珠光体组织的演变特点和渗碳体的变形。主要结果如下: 1 |