通过焊接热模拟试验和冲击韧性试验，研究了不同预热温度对X80级管线钢组织性能的影响。
Welding thermal simulation technique is adopted to study the influences of twice thermal cycle on the structure and properties of X80 pipeline steel.
通过焊接热模拟试验和冲击韧性试验，研究了不同预热温度对X80级管线钢组织性能的影响。
The effect of hot bending and heat treatment thermal cycles on the mechanical properties of X80 grade steel pipe was evaluated.
对某厂x 80高钢级管线钢母材、焊缝、热影响区进行了夏比冲击韧性试验，对其有效晶粒进行了研究。
The Charpy impact test of base metal, weld and heat affected zone of X80 grade pipeline steel of certain factory was conducted, and its effective grain was researched.
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 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.
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。
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，在T（10）钢中添加稀土元素对硬度没有明显的影响，但能显著改善该钢的冲击韧性。
The results show that RE additive may improve considerably the impact toughness and has little effect on hardness of steel T10.
根据试验测定的焊缝各区冲击韧性、断裂韧性、疲劳裂纹扩展速率和疲劳裂纹扩展门槛值，对焊缝力学性能作出综合评价。
The mechanical properties of the butt welded joints have been evaluated according to the impulsive and fracture toughness as well as the rate and threshold values of fatigue crack propagation.
对刮痕强度试验机进行适当的改进，就可测量芯砂的冲击韧性，并使一机两用。
The scratch strength tester has been improved in the paper, which can measure the impact toughness and has two uses.
冲击试验，拱形板冲击韧性最高。
In impacting test, arched bone fracture plate had the highest impact tenacity.
用微观组织分析、杆盘式磨损、湿磨法磨损和冲击韧性等试验手段，对高铬铸铁衬板的显微组织、力学性能和耐磨性进行了试验分析。
Failure analysis of high chromium cast iron liner has been studied by the microstructure, pole-pan wear abrasion, wet grinding and impact toughness.
试验研究了石油机械铸锻件常用低合金钢的显微组织结构对低温冲击韧性的影响。
An experimental investigation was made on the effect of the microstructure on the low-temperature toughness of the conventional low alloy steel used for petroleum machinery castings and forgings.
与未加微量元素的试验钢相比，在硬度基本相同的情况下，无缺口冲击韧性和强度分别提高192 %和16 %，伸长率提高6 5 %。
Compared with the steel without adding trace elements, non breach impact toughness, UTS and elongation were increased by 192 %, 16 % and 65 % respectively, but hardness was not obviously changed.
与未加微量元素的试验钢相比，在硬度基本相同的情况下，无缺口冲击韧性和强度分别提高192 %和16 %，伸长率提高6 5 %。
Compared with the steel without adding trace elements, non breach impact toughness, UTS and elongation were increased by 192 %, 16 % and 65 % respectively, but hardness was not obviously changed.
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