| 1. | Study on the fatigue properties of the ta15 titanium alloy plate and electron beam welding specimen
15板与电子束焊接疲劳特性研究 |
| 2. | Moire inferometry method for measuring displacement field of crack tip of bimaterial welding specimen
云纹干涉法测双材料界面裂尖位移场 |
| 3. | However , a further investigation is still needed in order to interpret the test results of cross - weld specimens for application in practical welded components
但是试验室的焊缝试样能否真实地反映焊接构件的力学行为，则仍是需要进一步研究的问题。 |
| 4. | As the performance of weld material or parent material per se could hardly reflect the integral strength of a weldment , the uniaxial cross - weld specimen provides an alternate to qualify the welding procedures
由于焊材或母材的性质均很难反映焊接接头的整体强度，用焊缝试样进行试验提供了合理评价焊接接头工艺性能的可能。 |
| 5. | The work of cohesion increased with the enhancement of wettability , but the bending strength of the welding specimens did not . when wc or mo was added the mode was adhesive rapture ( ii ) because of the difference between the thermal expansion coefficient of wc , mo and ni . the bending strength was high when iv rapture was occurred
研究发现粘附功随润湿性的改善而提高，但是焊接试样的抗弯强度并没有呈现明显的这种趋势；由于wc和mo与金属ni热膨胀系数相差较大，焊接试样断裂方式为内聚型断裂(型断裂) ，抗弯强度较低；以型方式断裂的体系具有较高的抗弯强度。 |
| 6. | In light of the uniaxial material tests and numerical simulations , the present paper reveals that the cross - weld specimen may be used for the high temperature strength assessment , but can hardly be used for simulation of the practical welded component , depending on the loading case of the component
本文根据实验室单轴试验和计算模拟，揭示了单轴焊缝试样的局限性：用于高温强度评价基本上是合适的，但用于模拟实际焊接构件的力学行为则误差甚大，这取决于焊缝的受力状况。 |
| 7. | The explosive welding specimen were also annealed in vacuum at various elevated temperature from 1000 to 1300 . optic microscope , sem , tem and eds ( electron diffraction scattering ) techniques are applied to observe the microstructure and the element profiles of the welding interface and the interdiffused layer , reveal the interdiffused performance of alloy elements at elevated temperature , and analyze the structure and composition of the precipitated phases . moreover , the tensile strength of welding line with the two different techniques and various welding parameters were carried out
采用金相、扫描电镜、透射电镜、能谱等多种实验手段对焊接结合层的微观组织结构、高温下nb - 1zr与不锈钢合金元素的互扩散行为，形成的互扩散层的成分、金相组织和扩散层中的析出相的相组成和相结构等，都进行了较为详细的分析，并且对在不同工艺、不同焊接参数下焊接的nb - 1zr合金和不锈钢的焊缝做了强度实验研究。 |
| 8. | An additional experiment is performed , and the weld specimens and heat effected zone specimens of dh36 steel are researched , through which the outcomes from the formulas of the standard and from other formulas is compared , which demonstrates the validity of standard test means for ctod and j - integral
另外还进行了一个附加试验，对具有不同尺寸的dh36钢的焊缝试样和热影响区试样进行了研究，将本文所用标准中公式的计算结果与其它经验公式的计算结果进行了对比，进一步证明了ctod和j积分标准试验方法的有效性。 |
| 9. | The results of explosive welding specimen show that the interfaces formed by explosive welding present disciplinary and consecutive shape . there are no distinctiness diffused layers on the interfaces . after elevated temperature annealing , the interdiffused layers formed in interface of nb - 1zr and stainless steel
研究结果表明：对于nb - 1zr合金和不锈钢爆炸焊接形成的结合区呈现规律的和连续的波浪形状，无明显扩散层；经高温退火后的结合层形成一定厚度的由nb - 1zr和不锈钢合金元素互扩散形成的扩散层。 |
| 10. | To validate the formulated transition element for the calculation of the hot - spot stress and stress concentration factor in the welded components by experimental results , the stress concentration factor of the experimental welded specimens carried out in the research group is calculated by using the developed plane - transition element . the calculated stress concentration factor in the two types of tested welding components agrees well with that obtained from the experimental result . and the calculated result on the tendency of hot - spot stresses agrees well with that from the measured result
为了验证文中构造的过渡单元模型用于分析焊接节点附近的应力集中问题的正确性和有效性，进一步又对过渡单元模型进行实验结果验证，采用平面过渡单元模型计算了本课题组进行的两类焊接构件的应力集中系数，并与根据实测方法得到的应力集中系数进行了比较，计算结果与实验测试得到的应力集中系数和相应的热点应力变化趋势比较吻合，为本文建立的过渡单元的实际应用提供了初步的基础。 |
