| 1. | Test method for high temperature strength of investment casting shell 熔模铸造型壳高温抗弯强度试验方法 |
| 2. | Rhombic mica . dimensions . appearance characteristics high temperature strength 菱形云母.尺寸.外观特性的高温强度 |
| 3. | Abstract : the reliable design of high temperature strength of welded components is of significant importance in assuring the structural integrity of pressure vessels and pip at elevated temperature 文摘:焊接构件的高温强度的可靠设计对保证高温压力容器及管道的结构完整性具有十分重要的意义。 |
| 4. | The influence of a rare earth oxide on the mechanical properties and high temperature strength of high al - zn base alloy was investigated and the microstructure and the fracture morphology was studied by sem 摘要研究了稀土氧化物对高铝锌基合金的力学性能和高温强度的影响,并利用扫描电镜观察了锌铝合金的显微组织及断口形貌。 |
| 5. | The results show that rare earth oxides are dispersed in matrix of zn - al alloy , thus refine grains , prevent normal modification effectively the strength and hardness is increased by 33 % and 46 % respectively and also improves high temperature strength 结果表明,稀土氧化物弥散分布于合金基体中,使晶粒细化,有效地阻碍了基体变形,强度、硬度分别提高33 %和45 % ,高温强度也有所改善。 |
| 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 knowledge on the properties of used materials is urgently needed for reasonable life - prediction and life - distribution . as cylinder bolts are concerned , they often rapture at the first tooth - root resulting from lower high temperature strength of their material and higher stress . since bolts operate at high temperature environment , creep skew and damage causing their failure are important factors that can not been neglected 就汽缸螺栓而言,由于螺栓材料的高温强度偏低,预紧力过大,常常在螺栓的第一齿根部位发生蠕变脆性断裂,因其长期在高温环境下工作,蠕变变形和蠕变损伤是其失效的一个不可忽略的重要因素。 |