The composition was optimized by tiny alloying, orthogonal test design and the hardness and impact toughness test for the different samples with different combination of alloy composition.
该技术采用微合金化，利用正交试验设计方法，对不同成分搭配的试样进行宏观硬度和冲击韧性测试，优化了合金成分。
The influence of pre-heating temperature on organization and performance of X80 pipeline steel was investigated by weld thermal simulation technique and the instrumented Charpy impact toughness test.
采用焊接热模拟技术和显微分析方法，研究了回火焊道热处理对X80级管线钢焊接热影响区韧性的影响规律。
The influence of pre-heating temperature on organization and performance of X80 pipeline steel was investigated by weld thermal simulation technique and the instrumented Charpy impact toughness test.
文章分析了自保护药芯焊丝的主要成分及作用，介绍了天津市金桥焊材集团有限公司研制的X80管道钢用自保护药芯焊丝的力学性能试验结果。
The results of mechanical test show that is bending strength, toughness against impact and void ratios can be improved after the rich iron matris is added with rare earth.
力学性能测试结果表明：添加稀土的富铁胎体及其金刚石复合材料的抗弯强度、冲击韧性和孔隙度均有明显的改善。
After chemical and physical test, on conveyor chain material, it is concluded that the composition and various mechanical properties can meet the standard, except impact toughness at room temperature.
对圆环链母材进行理化检测，证明化学成分和各项力学性能指标均符合要求，只有常温冲击韧性不符合要求。
Meanwhile the optimal welding parameter which was suitable for welding line impact toughness was gained by analysis on the test result of impact toughness and microstructure.
通过对冲击韧性的测试结果与微观组织的分析，确定出使焊缝冲击韧性最佳的焊接工艺参数。
Test results show that such steel can be mass produced with technology of a large converter plus the secondary refining, which can insure drill pipes for the transverse impact toughness.
试验表明，采用合适的冶炼工艺，大型转炉加炉外精炼能够批量生产超低硫低磷钻杆用钢，使钻杆获得高横向冲击韧性。
The influence of temperature on impact toughness increases with increase of impulse, and is quite smaller than the influence of impulse in the range of test temperature.
温度对冲击韧度的影响随冲量的增加而加大。在试验温度范围内温度的影响远远小于冲量对冲击韧度的影响。
In this paper, the dynamic fracture toughness measuring method for 921a shipbuilding steel is studied by instrumented Charpy impact test.
本文利用示波冲击试验，对船用921A钢动态断裂韧性的测试方法进行了研究。
The results show that the fracture toughness of Kic increased with lower loading rate and higher test temperature and the incision depth has no significant impact on the test results.
结果显示，断裂韧度随加载速率降低和试验温度提高而增大，而切口深度对结果的影响不显著。
By changing the nolch local ion of Charpy impact test specimens studied the effect of nolch location on toughness and cracking process in multi-layer welds.
通过改变焊缝夏比冲击试样的缺口取向，研究了缺口位向对多层焊缝金属韧性及断裂过程的影响。
The effect of heat treatment on hardness and impact toughness of polynary Copper alloy has been studied by means of metallographic, XRD, SEM/EDS, TEM and mechanical property test.
文章通过金相、 X射线衍射（XRD）、扫描电镜（SEM/EDS）及透射电镜（TEM）和力学性能分析方法研究不同热处理工艺对含多元合金元素铜合金硬度和冲击韧性的影响。
The corrosion weight loss rate and impact toughness of high Mn steel in hot concentrated caustic solution were studied by using immersed corrosion, impact test and SEM.
采用浸泡腐蚀试验和腐蚀前后的冲击试验并借助于扫描电镜观察，研究了热强碱介质中高锰钢的腐蚀速率和冲击韧度。
The study and test of rolling technology were carried out because the strain-age impact toughness of D grade hull plate could not meet the standard by conventional rolling technology.
针对韶关钢铁集团公司在用常规热轧工艺开发薄规格D级船板时出现应变时效不合问题进行了研究和工业试验。
The corrosion test, impact test and reaction-to-fire test results show that the stratified composite slabs have excellent corrosion resistant, toughness and firer…
对过渡层研究结果表明，复合面层与混凝土基材间的粘接性优异。
The corrosion test, impact test and reaction-to-fire test results show that the stratified composite slabs have excellent corrosion resistant, toughness and firer…
对过渡层研究结果表明，复合面层与混凝土基材间的粘接性优异。
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