The results show that the fusion zone is metallurgical bonding.
结果表明，沉积层和基材为冶金结合。
The difference exists in hardness at various places in fusion zone.
焊缝区不同部位的硬度存在一定差异。
As an emphasis, the fusion zone is always studied by the welding engineers for a long time.
长期以来，异种钢接头熔合区一直是焊接工作者研究的重点。
Objective To observe the structure alloyage in the fusion zone of different metals welded by laser.
目的观察不同金属之间焊接后熔焊区组织合金化情况。
The microstructure and fine structure of weld fusion zone for high strength fine grain steel were studied.
研究了高强度细晶粒碳素钢焊接接头熔合区附近的显微组织及精细结构。
A thin layer of fusion zone is fused and compounded at the high tem" perature in explosion welding process."
在爆炸焊接的过程中，结合区一薄层基体金属，在高温下将发生熔化、熔解或化合。
Central crack for the welded plate was located in the fusion zone between welding seam and heat-affected zone.
焊接板的中心裂纹处于焊缝与热影响区之间的熔合区。
The main region of invalidation of the weld joint between different steels is commonly in fusion zone during welding or serving.
异种钢焊接接头在焊接时或使用期间，发生失效的主要区域通常在熔合区。
Recognizing that the solubility of gas is greater in the liquid state than in the solid state, the subject of weld porosity is relevant to fusion zone discussion.
认识到溶解度的气体是更大的，在液体状态，比在固体状态下，受焊缝孔隙率是相关的熔合区的讨论。
Compared with base metal, the microstructure in fusion zone is finer, and the hardness is higher. The hardness difference exists at various places in fusion zone.
与母材相比，焊缝区组织细小，硬度较高，焊缝区不同部位的硬度存在一定差异。
Stress-strain tests show that: the weld residual stress and the fusion zone is relatively concentrated, the residual stress of the heat affected zone is relatively small.
应力应变测试表明：焊缝与熔合区是残余应力比较集中的地方，热影响区的残余应力比较小。
The joint which is connected by welding method is called the welding joint, which is composed of welding seam, fusion zone, heat affected zone and its adjacent base metal.
用焊接方法连接的接头称为焊接接头，它由焊缝、熔合区、热影响区及其邻近的母材组成。
The welding method used was a PC-GMAW process with mixture gases shielding. Central crack for the welded plate was located in the fusion zone between welding seam and heat-affected zone.
焊接方法为脉冲熔化极混合气体保护焊，焊接板的中心裂纹处于焊缝与热影响区之间的熔合区。
Modern analytical methods have been used to investigate the patterns of fusion zone and the diffusion behaviors of elements by tig direct welding and tig with Sn as transition layer welding.
利用现代分析测试手段分别研究了TIG焊直接焊接镁铝和镀锡焊接镁铝的焊缝熔合区形貌，并对其进行了元素扩散行为的分析及比较。
The results show that:under the no preheating condition, the microstructure of weld metal is columnar austenitic, and brittle martensite exists in the fusion zone and over-heated zone unavoidably.
研究结果表明：在不预热条件下，用KD286焊补钢轨，焊缝组织为柱状奥氏体组织，熔合区和过热区不可避免地产生脆硬的马氏体组织。
A new view of characteristic zone of fusion welding joint is put forward through observations and researches of many fusion welding joints.
通过大量的熔化焊接头试样的观察和研究，提出了熔化焊接头特征区域划分新方案。
The appearence characteristics of the heterogenous mixture zone near the bottom of weld metal in the fusion welded joint are studied through metallographic observations of many fusion welded joints.
通过时大量熔化焊接头的金相观察，研究了熔化焊接头焊缝底部附近“不均匀混合区”的形貌特征。
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。
The principle and shortage of traditional weighted average algorithm is analyzed in this paper, and then a new image fusion algorithm based on enhancement on sensitive areas zone is proposed.
论文分析了传统的加权平均算法融合的原理和不足，并在此基础上提出了基于特征区域增强的融合算法，在一定程度上改善了融合图像的质量。
A new view of characteristic zone of fusion welding joint is put forward through observations and researches of many fusion welding joints.
本文研究了已提出的几种熔焊接头特征区域划分方案，找出认识一致和认识分歧之处，并对认识分歧的原因进行了详细讨论。
A new view of characteristic zone of fusion welding joint is put forward through observations and researches of many fusion welding joints.
本文研究了已提出的几种熔焊接头特征区域划分方案，找出认识一致和认识分歧之处，并对认识分歧的原因进行了详细讨论。
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