in the fourth part, a vickers hardness auto measuring system is developed based on machine vision.

在理论研究的基础上，本文的第四部分中设计了一个机器视觉维氏硬度自动检测系统。

and the measured uncertainty in vickers hardness testing was evaluated according to procedure without bias method and procedure with bias method.

利用无偏差估计方法和考虑硬度计偏差的方法对维氏硬度试验中的测量不确定度进行了评定。

vickers hardness tester hvs-5a1/hvs-5d1 are using precision machinery and light, electricity, computer software, the combination of a new type of hardness testing equipment.

hvs-5a1/hvs-5d1维氏硬度计是采用精密机械和光、电、计算机软件相结合的新型硬度测试仪。

to get the impress region of the vickers hardness test exactly using the common digital image processing techniques, this paper introduces a strategy for the analysis.

材料表面维氏硬度试验压痕区域用数字图像处理技术自动準确提取是一个技术难点。

with the addition of bn content increasing, the electrical resistivity of bn/tib2 composite ceramics gradually increased as vickers hardness decreased.

随着bn添加含量的增加，复相陶瓷的电阻率增大，维氏硬度逐渐下降。

the vickers hardness and nitriding surface fulfill requirements, and also improves the machining quality of the products.

主轴锥孔的维氏硬度和氮层深度均达到要求，提高了产品的加工质量。

the martensitic steel 15 was heat treated under high pressure in the cs-ib type hexahedron anvils press. the vickers hardness of the sample was measured.

对原始组织为马氏体的冷轧15钢在cs-ib型六面顶压机上进行了高压热处理，测量试样的维氏硬度。

by means of the analysis and calculation of uncertainty for the vickers hardness test of metallic materials, the paper introduced an uncertainty evaluation method for the vickers hardness test.

通过对金属维氏硬度试验的不确定度的分析与计算，介绍一种维氏硬度试验不确定度的评定方法。

the penetration process is similar to vickers hardness test, it is triaxial compressive stress condition in the target.

侵彻时的应力状态与压入法测硬度相似，靶内应力状态为三向压应力。

the results show that: the strengthening phases precipitates fewer and the vickers hardness decreases with cooling speed increasing;

结果表明：冷却速度越快，各种强化相析出的越少且小，硬度越低；

vickers hardness test showed that the hardness of ferrite in healing area is higher than that in matrix, which may result from the strengthening of polyangular grains.

维氏硬度测试结果显示，出现在愈合区的铁素体组织维氏硬度高于基体区铁素体组织，可能原因是愈合区中出现的多边晶块结构所引发的强化。

hv-5 vickers hardness tester is optical and electrical integration of high-tech products, the use of computer software programming, optical measuring systems.

hv-5型小负荷维氏硬度计是光机电一体化的高新技术产品，采用计算机软件编程，光学测量系统。

they are the principle of vickers hardness, image acquisition, image processing of the image of indentation, and the implementation of vickers hardness testing system.

本文主要从四个方面对维氏硬度测量系统进行了研究和介绍：维氏硬度计原理、图像采集、压痕图像处理和系统实现。

vickers hardness (hv2) along the gradient changes regularly from high to low, then from low to high, corresponding to the microstructure change in the alloy.

合金截面的小负荷维氏硬度出现由高变低再由低变高的规律性变化， 与合金内部微观组织结构的变化相对应。

vickers hardness test. the vickers diamond pyramid test is similar to the brinell test, but it employs a small diamond of pyramid shape, instead of a steel ball.

维氏硬度别试；维氏金刚石棱椎试验与布氏硬度试验相似，但是它使用棱椎形小金刚石压头，而不是用钢球。

hd9-45b motorized superficial rockwell & vickers hardness tester with 6 steps testing force is able to meet the needs of superficial rockwell & vickers hardness tests.

45型电动表面洛氏维氏硬度计是轻载荷洛维二用表面硬度试验机，该机具备了六种试验力，能满足表面洛氏、维氏硬度的测试。

the comprehensive mechanical properties analysis mainly includes cryogenic impact test, vickers hardness test, the tensile testing at ambient temperature and the bending test.

综合力学性能分析主要包括低温沖击试验、维氏硬度试验、室温拉伸试验和弯曲试验。

the effects of scandium on the recrystallization of aluminium-lithium alloy are investigated by measuring the vickers hardness of the testing alloys and by observing their microstructures.

通过硬度测量和微观金相观察，研究了钪对铝锂合金再结晶过程的影响。

the energy loading processes on the high-carbon steel wires were analyzed, while the coating properties were tested by sem, vickers hardness instrument and other detection means.

通过对高碳钢丝上的能量加载情况进行分析，并利用扫描电镜、维氏硬度仪等检测手段对涂层进行研究。

the mechanical properties results show that the fracture toughness and vickers hardness of the 70w_2b_5/c composite increase with the sintering temperature.

力学性能测试结果表明，随着烧结温度的升高，70w_2b_5/c复合材料的断裂性与维氏硬度均增加。