| 1. | Standard practice for examination of welds using the alternating current field measurement technique
用交流场测量技术检查焊缝的标准实施规范 |
| 2. | Numerical simulation on alternating current field measurement and sensitivity analysis of detected signal
交流电磁场检测数值仿真及其信号敏感性分析 |
| 3. | The alternating current field measurement ( acfm ) technique is a new kind of the electromagnetic non - destructive testing ( not ) techniques , which represents one of the main development directions
交变磁场测量技术是近年来兴起的一种新型电磁检测技术，代表着无损检测领域未来的一个主要发展方向。 |
| 4. | Influenced by the alternating current field , except that a little of eutectic iron - phase still is the acicular structure , the most of eutectic iron - phase of the al - 20si - 5fe - mn alloy is refined into tiny particles which is segregated
Al - 20si - 5fe - xti合金通过交流电场作用，共晶组织全部呈细小的颗粒状均匀分布于- al基体上。 |
| 5. | The influences of the alloying elements of mn , ti , re , alternating current field ( acf ) , electromagnetic stirring and reheating on the morphology of the second phase of al - 20si - 5fe alloy are studied thoroughly
本文重点研究了mn ， ti ， re等合金元素、交流电场、电磁搅拌、熔体保温时间和二次加热等工艺对al - 20si - 5fe合金微观组织的影响。 |
| 6. | That the alloying element mn and ti substitutes the atom of fe in the rich iron - phase ( al , si , fe ) and resumes the part of the element si in primary phase refines the second phase . at the same time , the volume percentage of second phase is increased . at the course of solidification , the alternating current field changes obviously the microstructure morphology of the al - 20si - 5fe - x alloy and the number of particle eutectic structure is increased
合金元素mn 、 ti通过占据富铁相( al , si , fe )中铁原子的晶格位置，同时消耗部分初生相中的si元素，形成四元富铁相( al , si , fe , mn ) ，细化了合金中的第二相，同时提高第二相体积百分数。 |
| 7. | Influenced by the alternating current field , all of the eutectic microstructure of al - 20si - 5fe - ti alloy changed into very small particles which is well - distributed on the base of a - al . electromagnetic stirring stimulates the forming of equiaxed crystal in al - 20si - 5fe - mn alloy . primary iron - phase is transformed from thick needle into smooth block
电磁搅拌促进al - 20si - 5fe - xmn合金中等轴晶的生成，初生富铁相由原来粗厚的片状物转化成比较圆整的块状，共晶组织中铁相主要以较短的针片状存在。 |
