The constitutive equations were gained by regression analysis and some material constants were derived from that with the aid of om , x - ray , sem and tem , the deformation structure of the mid - strength weldable 1420aluminum - lithium alloy on different hot deformation conditions was studied and the soften mechanism was discussed . at the same time , the fracture behavior has been studied as an important part . the fracture mechanism of 1420 aluminum - lithium alloy was confirmed 结合金相显微镜、 x -射线衍射、扫描电镜、透射电镜等现代化的试验手段，研究了中强可焊1420铝锂合金热变形不同变形条件下的组织变化及软化机制，分析了不同变形条件对合金材料组织变化的影响，确定了合金材料的软化行为机理；同时，结合合金材料的热变形高温拉伸试验，重点研究了材料的断裂行为，分析了合金材料的断裂现象，探讨了合金材料的断裂机理。
The design architecture is a complex comprehensive subject , which involves architecture , sociology , folklore , psychology , human engineering , structural engineering , architectural physics , architectural materials and so on and also is concerned with furniture display , decorative materials , structures , functions , arts and crafts , greening , gardening , etc . , and apply to many subjects knowledge to comprehensively conducts multi - levels parietal environment design . its means is to apply to plane part , spatial structure , perspective , illusion , light technology , reflection and color variety principles and material means making " big " space turn to " small " , while " small " space turn to " big " . and according to design requirements , the spaces are re - divided and composed making it increase visual extension , and add layers through various kinds of material structure changes that make " spacious " is not " blank " while " small " is not " crowded " , creating an anticipant style and atmosphere 建筑设计是一门复杂的综合学科，我们研究的目标及内容它涉及到建筑学、社会学、民俗学、心理学、人体工程学、结构工程学、建筑物理学以及建筑材料学等学科，也涉及到家具陈设，装潢材料的结构和性能、工艺美术、绿化、造园艺术等领域，而且是运用多学科的知识，综合的进行多层次的空间环境设计，其在手法上是利用平面主体和空间构造、透视，错觉、光影、反射和色彩变化等原理以及物质手段，使大空间变小，小空间变大，按设计构思的要求，将空间重新划分和组合，使之增加视觉上的扩展延伸，通过各种物质构件组织变化，加添层次，以求大而不感其空，小而不感其塞，创造出预期的格调和建筑环境气氛。
