| 1. | Research on diffusion welding technology of al - li alloys without interlayer
铝锂合金无中间层扩散焊接工艺研究 |
| 2. | Vacuum diffusion welding
真空扩散焊 |
| 3. | An experimental sample made by new lom process and diffusion welding process is presented
本文应用热扩散焊接研究成果和新lom方法制作了样模。 |
| 4. | A process connecting metallic slice sheet by diffusion welding is also put forwarded in this dissertation
本文提出了用真空固态热扩散焊接工艺连接金属分层板的方法。 |
| 5. | Welded and brazed assemblies for aerospace construction . assembly of metallic materials carried out by diffusion welding . quality of welded assemblies
航空航天结构用焊接和钎焊组件.用扩散焊接法焊接的金属材料组件.焊接组件的质量 |
| 6. | Vacuum diffusion welding of refractory steel to heat resistant alloy was investigated in this paper . the effect of welding parameters on the deformation ratio of joints was examined
针对耐热合金与耐热钢的真空感应扩散焊，研究了扩散焊连接工艺参数对接头变形率的影响、接头变形率与接头性能的关系以及不同接头变形率的微观形态。 |
| 7. | In this paper , three unique models were designed to research atom diffusion at interface , contacting line and joining point under bpec heating and compare with it under radiation heating in order to find out if bpec speed atom diffusion . the first model was aimed to research atom diffusion at interface under bpec heating . experiment condition of bpec diffusion welding sheet cu and ni : direct diffusion welding , at a pressure of l0mpa , welded at 750 ~ 900 , with heat rate of 200 ~ 400 / min for 10mm , on / off of 6 / l ~ 48 / 8 , with die or not , vacuum of 6pa
本文设计出三种样品预构件，研究脉冲大电流加热条件下片状材料、线状材料和球形颗粒之间的原子扩散过程，弄清脉冲大电流加热条件下原子扩散与一般烧结和焊接过程中原子扩散的区别，以证实特殊的电场和磁场是否对原子的扩散有推动作用，揭示脉冲大电流加热条件下原子的扩散过程，探索脉冲大电流热加工技术快速高效的原因。 |
| 8. | Pulse electric current heat treatment ( pecht ) developed by sodick , ltd . , of japan , is a recently developed material processing method which consists of spark plasma sintering and welding , plasma activated sintering and welding , big pulse electric current ( bpec ) diffusion welding etc . the following are basic merits of pecht : rapid heating and cooling ; short sintering or welding time ; lowering sintering or welding temperature
脉冲电流热加工( pulseelectriccurrentheattreatment ，比如烧结，焊接等)是九十年代发展起来的一种材料快速制备新技术，它包括放电等离子烧结与焊接、等离子活化烧结与焊接、脉冲大电流扩散焊接等。它具有升温、降温速度快、能在较低的温度下烧结或焊接以及时间短的特点。 |
| 9. | The fracture energy of cu / - aiodiffusion - welded joints was greatly increased by the introduction of the thin film nb interlayer whereas diffusion welding can be performed at a relatively low temperature ( 900 ) . the increase in fracture energy of the joints with nb film interlayer was attributed to the strong abhesion of nb to - aio combined with larger plastic deformation in the metal side during fracture tem observations showed large amounts of dislocations existing at the interfacial regions
本文主要内容就是概括地介绍了国内外关于扩散连接接头行为数值模拟的发展现状；主要包括界面孔洞消失过程、接头元素扩散与反应层的形成、接头变形与应力行为的数值模拟，以使人们能够定性或半定量的分析扩散连接因素对接头性能的影响。 |
| 10. | By using diffusion welding method ( under certain welding parameters such as temperature , pressure , time and atmosphere , etc ) and employing rational structural control technique , a kind of 93w - ofc - tc4 - a1 - mb2 system flier - plate with good parallelism , planeness and high densification was prepared , which met the needs of initial design and the basic requirement of flier - plates
利用平面扩散焊接法(控制一定的温度、压力、时间、气氛等条件) ，同时采取合理的结构控制方法，成功实现了93w - ofc - tc _ 4 - al - mb _ 2的整体连接，得到了平面性好、平行精度高、整体致密的波阻抗梯度飞片，满足了设计结果和梯度飞片的基本结构要求。 |
