The hardness test show that the weld hardness with high welding heat input is higher than that with low welding heat input.
硬度测试结果表明，大线能量焊接热处理后焊接接头的硬度高于小线能量焊接的焊接接头硬度。
The increase of weld current can reduce the hardness and the content of upper bainite, and lower the sensibility of hydrogen cracking of the joints.
在避免烧穿的前提下增大焊接电流能够减小硬度、减少上贝氏体，从而降低氢致开裂敏感性。
Regardless of DC or AC magnetic field, the hard phase in weld metal overlay is fine and distributed "the hexagon" in optimum parameters, then hardness and wear extent in weld metal overlay are higher.
在最佳的磁场参数作用下，无论是直流磁场还是交流磁场，堆焊层中硬质相细小且成“六角形”分布，此时堆焊层金属的硬度和磨损量均达到最佳状态。
The author strongly suggested that those centrifuges which has been servicing more than10 years, should be safety-checked on thickness, hardness and the weld of rotating drum.
提出了使用10年以上的离心机需对转鼓的壁厚、硬度、焊缝等进行安全检测的建议。
The microstructure, hardness, wear resistance and thermal fatigue resistance of submerged -arc welded surfacing lay er in weld state and heat treatment state have been comparatively investigated.
比较研究了堆焊层在焊态和回火态的组织、硬度、耐磨性及抗热疲劳性能。
The hardness of weld region shows'less variation than base metal and the ultimate tensile strength of TMAZ is almost 20% improvement.
焊缝区的硬度值波动范围很小，抗拉强度比母材增加约20％。
The hardness tests on welding joints prove this by showing that the hardness reduces in fusion area, and increases slightly in weld zone.
通过对焊接接头的硬度检测，发现熔合区硬度下降，焊缝区略有上升。
And the hardness of the weld account for 70 percent of the main body material.
同时发现焊接区的硬度约为母材硬度的70%。
In addition the results of hardness test showed that the hardness of based metal and the HAZ and the weld was equivalent.
另外硬度试验显示，母材、热影响区、焊缝硬度相当。
Cracking resistance of ultra-low cabon Cu-bearing age-hardening steels was studied in this paper by computing, maximum hardness in weld heat-affected zone test and Y-groove cracking test.
采用理论计算、热影响区最高硬度试验和小铁研试验方法研究了超低碳含铜时效钢的抗裂性。
Hardness measurement on welding thermal simulated specimens and cross weld specimens showed that no softening occurred in the HAZ. All the cross weld tensile specimens ruptured in the base metal.
无论是焊接热模拟试件还是焊接接头硬度测试均表明HAZ不存在软化问题，接头拉伸试验断在远离热影响区的母材上。
Adopted the technique, the temperature can get a high temperature, not left weld lines problems, we can drive up the surface hardness.
采纳该技巧，模温能够得逞很高的温度，不存留熔接线问题，一起能够抬高产品外表硬度。
The results show that different post-weld aging temperatures lead to variations in microstructure and micro-hardness across the weld.
结果表明，焊后时效处理温度不同，焊接接头各微区显微组织和硬度发生的变化不同。
TEM observation revealed that the changes in micro-hardness of micro-areas across the weld are mainly related with the precipitate evolution during the aging process.
透射电镜观察表明，焊接接头各微区的显微硬度变化主要与时效强化相的析出行为有关。
The tensile test fracture area locates on weld seam, and the hardness near HAZ fusion line is the highest, away from the fusion line, the hardness declines and reach the parent metal hardness.
焊接接头的拉伸试验断裂部位在焊缝。焊接HAZ熔合线附近的硬度值最高，远离熔合线硬度降低，并逐渐接近母材金属的硬度。
The results show that the powder join with the substrate firmly and the micro-hardness of LY12 powder weld is higher than A1-Y powder weld.
研究结果表明，填充ly 12和A1 -Y两种不同的粉末对LY 12材料进行搭焊处理，粉末和基体均结合牢固，但LY 12粉焊缝的硬度总体高于A 1 - Y粉焊缝的硬度。
The amount of the acicular ferrite and hardness of the weld metal increase as cu content increasing.
随着焊缝铜含量的增加，针状铁素体数量增加，焊缝显微硬度增大。
The diffusion zone width of main alloying elements increases and hardness of the friction weld zone near TC4 titanium alloy side improves after post-weld heat treatment.
经焊后回火热处理后，主要合金元素沿焊合区的扩散区宽度增大；焊合区钛合金侧硬度值显著提高。
The diffusion zone width of main alloying elements increases and hardness of the friction weld zone near TC4 titanium alloy side improves after post-weld heat treatment.
经焊后回火热处理后，主要合金元素沿焊合区的扩散区宽度增大；焊合区钛合金侧硬度值显著提高。
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