铝合金

The model of laser welding aluminum alloy was set up by means of finite element method. The changes of surface absorptivity with different laser power were simulated by ANSYS.

中文摘要：用有限元方法建立了铝合金激光焊接模型，采用ANSYS软件模拟了铝合金激光焊接过程中铝合金表面吸收率对焊接过程的影响。

Finite element models are set up to simulate the temperature field variation process, and simulation results agree well with the experimental results.

采用有限元方法，计算了脉冲激光辐照下铝合金板和铝合金／水结构中的温度场变化。

Shanghai Textile Heald Frame Works imported complete set of technique in Heald Frame design and manufacture ,special equipment and complete software for process, quality control and production management.

从德国引进全套综框设计制造技术，无梭织机综框生产专用设备，以及完整的生产工艺、质量控制、工序管理等技术软件；从意大利引进2200/吨铝合金型材卧式热挤压生产线；从日本引进全套不锈钢冷轧型材生产线和国产配套设备，总投资6000万元。1997年11月通过《铝合金综框国产化》国家重大引进技术项目验收。

Following this route, the precipitates disperse homogeneously in the alloy, and the mechanical properties are obviously improved.

用正交试验方法研究了2024铝合金的分级时效工艺，优选出了一种能获得均匀、弥散分布的沉淀强化相以改善铝合金的常规力学性能的分级时效工艺： 100℃，2h+190℃， 2h。

It has been found that during the spark plasma sintering process, under the condition of large current, short sintering time and lower sintering temperature, the metastable icosahedron quasicrystal phase in primary powder particles is kept. And the strong discharge plasma among particles can decompose or break the oxide film on the primary powder's surface, resulting in the increment of their combination strength. So the as-prepared bulk alloy possesses high density and ultra-high strength.

结果表明，在放电等离子烧结过程中，采用大电流、短时、低温的烧结条件可使快冷雾化法制备的原始合金粉末中的准晶强化相及其它细小强化相得以保存，而局域强放电等离子体可以分解或破碎铝合金粉末表面的氧化膜，使合金粉末颗粒间的结合强度增加，制备出的块体铝合金具有高的致密度和超高强度。

The invisibility and instantaneity of RSW process make it difficult to monitor and control weld quality.

铝合金电阻点焊技术成为铝合金在这些领域推广应用的一个主要制约因素。

Based on application state and refinement mechanism of treatment agent of aluminum alloy mele,the paper analyses the effect of rare earth,Al—Ti—B interalloy and Re—AlTiB interalloy on cast structure of aluminum alloy,then the application of compound Re—AlTiC interalloy was studied.

在叙述铝合金熔体处理剂应用现状与细化机理的基础上，分析了稀土添加剂、Al—Ti—B中间合金细化剂以及Re—AlTiB中间合金对铝合金铸态组织的影响，接着对复合添加剂稀土铝钛碳中间合金作了应用研究。

The results shown the needle-shaped Mg2Si particles with length of about 2μm and width of 100 nm or several nanometers,and elliptical-shaped Al8Si6Mg3Fe intermetallic particles were observed in the cast A356-T6 aluminum alloy.

结果表明，铸造A356-T6铝合金基体中分布着约2μm长，100 nm宽，小者只有几个纳米的针状Mg2Si粒子，并且发现经T6工艺热处理后在铸造A356铝合金中存在椭圆状Al8Si6Mg3Fe金属间化合物。

In order to investigate the effect of contact resistance on nugget growth and heat source distribution, an axisymmetric two-dimensional finite element model was developed to simulate the spot welding of aluminum alloys.

为了研究铝合金点焊时接触电阻对点焊熔核形成和焊接热源分布的影响，本文采用二维轴对称模型，用有限元法对铝合金点焊过程进行了数值模拟。

The effects of the corrosive accelerator,acid ratio,phosphatizing temperature,phosphatizing time and the additives on zinc phosphatization of aluminum alloy were investigated.

以LY12铝合金为试样，讨论了腐蚀加速剂、酸比、磷化温度、磷化时间、磷化添加剂对铝合金磷化的影响，得出了相应的最佳工艺参数。

They weren't aggressive, but I yelled and threw a rock in their direction to get them off the trail and away from me, just in case.

他们没有侵略性，但我大喊，并在他们的方向扔石头让他们过的线索，远离我，以防万一。

In slot 2 in your bag put wrapping paper, quantity does not matter in this case.

在你的书包里槽2把包装纸、数量无关紧要。