1) Hardening exponential determined by hardness method
硬度法测定应变硬化指数
2) strain hardening index
应变硬化指数
1.
It was found that the stress-based FLSD differs from the conventional strain-based FLD,and the reasons for the disagreement between them were discussed,the influence of strain hardening index and wall thickness on FLSD was also analyzed.
发现并讨论了FLSD与传统成形极限图FLD之间存在的差别,分析了应变硬化指数n和壁厚t值对FLSD的影响。
2.
Based on the state equation that stress is a function of strain and strain-rate, the differential constitutive equation during superplastic tensile deformation is deduced, and then the mechanical meaning of the strain hardening index in the equation is interpreted.
从应力为应变和应变速率函数的状态方程出发,导出了超塑性拉伸变形的微分本构方程,从而解释了方程中应变硬化指数的力学涵义。
3.
The physical meaning and several determination methods of strain hardening index and thick anisotropy index r are introduced.
介绍了应变硬化指数ｎ值和厚向异性指ｒ值的物理意义和几种不同的测定方法，具有一定的实践指导意义。
3) Strain hardening exponent
应变硬化指数
1.
For the steel containing high content martensite,strain hardening exponent n and strain hardening rate significantly increase in the stage of uniform deformation with the increase of martensite.
利用扫描电子显微镜对不同马氏体含量的试样的断口和断口侧面分析,发现在高马氏体含量下,双相钢变形和断裂与马氏体含量和组织形态有关,且其均匀变形阶段的应变硬化指数n值及应变硬化速率也会随着马氏体含量的增加而显著升高。
2.
The results showed that the strain hardening exponent,determined by the Crussard-Jaoul analysis,was affected by dislocation density and twin volume fraction,especially,it was increased greatly with twin.
基于Crussard-Jaoul分析法所得的高锰钢应变硬化指数值的变化主要受位错密度和孪晶体积分数的影响,尤其随着形变孪晶量的增加,应变硬化指数获得迅速提高。
3.
With the indication ball indentation technique ( IBIT),the indentation hardness,young\'s modulus,yield strength,ultimate tensile strength,strain hardening exponent and surface residual stress of the tested joint were simultaneously measured.
焊接接头是一个组织与性能的不均匀体,为了对接头力学性能作出有效评价,采用示值球形压痕技术(IBIT),以步进电动机为动力,用载荷传感器、位移传感器连续获取载荷、位移数据;以触摸屏为操作界面,用PLC进行运动控制和数据处理,研制出压痕性能测试系统,获得被测接头的压痕硬度、弹性模量、屈服强度、抗拉强度、应变硬化指数及表面残余应力。
4) hardening strain
应变硬化度
5) Strain hardening exponent(n)
拉伸应变硬化指数n值
补充资料：硬化指数
硬化指数
hardening index
y inghua zhishu硬化指数(hardening index)指金属薄板成形时真应力S一真应变。关系式S~K广中的幕指效城式中K为强度系数)。亦即双对数坐标系场~坛。中，真应力一真应变关系式195~坛K十滋g。直线的抖率。是无量纲值，又称加工硬化指数。(见真应力一宾应变曲线)从数值上看，硬化指数，值等于(或近似等于)单向拉伸时材料最大均匀伸长应变的大小，即所渭细颈点应变。应变分布不均是板材成形中的一个重要特点，，值的大小实际上反映了板材的应变均化能力，主要说明: (1)成形件的应变峰值不同。n值小的材料产生的应变峰值高，，值大的材料产生的应变峰值低; (z)成形件上的应变分布不同。n值小的材料应变分布不均匀，n值大的材料应变分布均匀。 硬化指数n值对板材成形极限曲线具有明显的影响，n值大材料的成形极限曲线高，n值小材料的成形极限曲线低。板材的拉胀性能在很大程度上取决于材料的n值，。值高时，拉胀性能也好。因此，硬化指数，值是评价板材成形性能的重要指标之一。 (康永林)
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条