| 1. | But i can ' t help mys . elf
"但我不由自主 |
| 2. | It has been found that whether the beryllium material is produced by hp or hip , the mys value will rise remarkably as the grain size is reduced , which conforms to the hall - petch formula
发现无论是热压还是静压铍材，随着晶粒尺寸的变小，其_ ( mys )显著提高，符合hall - petch公式。 |
| 3. | Compared with the htped beryllium material with the same particle size , the hot - pressed beryllium material has lower mys , . value because its higher consolidation temperature will cause grains to grow
在用相同粒度粉末成形固结时，由于热压温度较高，晶粒有所长大，因此，热压铍材_ ( mys )较静压铍材低。 |
| 4. | The hiped beryllium material has higher mys value because of not only its lower consolidation temperature and higher consolidation pressure but also the more uniformly and finely dispersed distribution of its beo phase
静压铍材由于其细小均匀beo的弥散分布，加上在较低温度和高压下成形固结，从而_ ( mys )较高。 |
| 5. | The research findings with regard to the microstructure of beryllium material , especially the micro - yield mechanism based on the analysis of dislocation movement will perfect and enrich the content of the worldwide research on mys mechanism
在微观组织结构研究，特别是通过位错运动状况探讨微屈服机理方面所做的工作，完善和丰富了世界_ ( mys )机理研究的内容。 |
| 6. | The research has conducted the first relatively systematic study on the manufacturing process , performance and microstructure of beryllium material made in china , through which we have learned basically the mys condition of chinese beryllium material and the key influencing factors of the mys
通过本研究，基本掌握了我国铍材的_ ( mys )情况及其影响因素，为制定我国铍材_ ( mys )指标和推动铍材在航空、航天、航海方面更广泛应用将起到积极的作用。 |
| 7. | Beryllium powders with the same particle size and various contents of beo were prepared by pre - sintering - acid washing processes initiatively and the influence of beo alone on o mys of beryllium was observed and some new results have been obtained - compared with the content of beo , the distribution of beo in beryllium has more critical influence on mys ; finely dispersed beo along the grain boundaries and in the matrix results in the dispersion strengthening of beryllium matrix and thereby the higher mys value ; on the contrary , the coarser beo particles clustering on the grain boundaries results in negative influence on o mys
开创性地用预烧结? ?酸洗工艺制备了相同粒度、不同beo含量的铍粉，从而开展了beo含量单独对铍材_ ( mys )影响的研究，得出一些新的结果：与beo含量相比， beo在铍中的分布状态对_ ( mys )的影响更大。沿晶界、晶内弥散分布的较细小beo对基体铍有弥散强化作用，使_ ( mys )即较高；如果beo较粗大地成簇状聚集在晶界，反而对_ ( mys )有不良的影响。 |
| 8. | The test result of the beryllium materials with medium beo content and high strength and high elongation showed that the mys value of a kind of hot - pressed beryllium material of 2 . 5 % beo and produced at 1070 ? reaches 71mpa , and its elongation is up to 3 . 52 % , 17 % higher than american 1 - 250 hiped beryllium material with the same beo content
5的铍材，其_ ( mys )达到71mpa ，且延伸率达到3 52 。延伸率超过了同样beo含量的美国i - 250静压铍材17 ，为今后用静压方法制备综合性能全面达到和超过i - 250铍材进行了有益的探索。 |
| 9. | Supported financially by the national natural science foundation of china , employing the testing techniques such as optical metallography analysis , scanning electron microscope ( sem ) , electron microprobe scanning microscope ( emsm ) , transmission electron microscope ( tem ) , x - ray diffraction ( xrd ) and mechanical performance measurements ( including micro - yield strength mys ) etc . , this research has worked comprehensively and deeply on a very important issue ? the micro - yielding behavior and mechanism of beryllium material for inertial guidance instruments and optical mirrors ? which has been paid more attention to by designers since the 8th even the 7th five - year plan
在国家自然科学基金资助下，本研究采用光学金相显微镜，扫描电镜( sem ) 、电子探针( emsm ) 、透射电镜( tem ) 、 x射线衍射( xrd ) 、力学性能(包括微屈服强度_ ( mys ) )等测试技术，较详尽和深入地研究了“七五” 、 “八五”计划期间用户一直希望解决的惯性导航和光学镜体铍材一个十分重要的问题：微屈服行为及机理。 |
| 10. | Utilizing the beryllium powders with steadily low oxygen made by the newest method of impact grinding , the research pioneered the first attempt in the world in studying the effects of the grain size independently on the mys of the vacuum - hot - pressed ( hp ) beryllium material and the cold - hot - isostatic ( hop ) beryllium material
利用先进的气流冲击研磨方法制得稳定低氧含量的铍粉，在国际上首次研究晶粒尺寸单独对真空热压(本文简称热压)和冷、热等静压(本文简称静压)铍材_ ( mys )的影响。 |
