Yang Chunshu. Development of Materials Engineering to Vitalize Aviation Industry——Review and Future Prospects for 35 Years of Research Work at the Institute of Aeronautical Materials[J]. Journal of Materials Engineering, 1991, 0(2): 3-13.
This year is the 40th anniversary of the founding of theaviation industry of China, and also May 26 of this year isthe 35th anniversary of the founding of the Institute of Aeronautical Materials. All of us are very elated and excitedfor the development and strengthening of the aviation industry and for the contribution made by the Institute to the aviation industry of China.
Wang Shinan. Enhance Professional Management in Aeronautical Materials and Promote Technical Progress[J]. Journal of Materials Engineering, 1991, 0(2): 14-15.
Zhou Hongfan, Zhang Chaogang. The Present Status, Development and Countermeasure of the Materials Database[J]. Journal of Materials Engineering, 1991, 0(2): 16-18.
The materials database as an important branch of database technique has been set up in some developed countries since 1960’s. During 1980’s, it has been entering into networking, modernization and computerization, and playing an important role to the society and technology area. With the rapid development of materials science, information engineering and computer technique,the systematic design, software and management of materials database are developing towards a higher level. The present status and the development of materials database both at home and abroad are discussed in this paper, some of the possible countermeasure for establishment and development of the database in accordance with the practical situation of China are presented as well.
Chen Rongzhang. Developments of Directionally Solidified and Single Crystal Superalloys and Blades[J]. Journal of Materials Engineering, 1991, 0(2): 19-23.
Directionally solidified(DS) and single crystal(SC) superalloys and technology have been hardly studied with great successes for many years in Beijing Institute of Aeronautical Materials(BIAM). The advanced DS equipments are established, the ripe DS technology is developed, and a series of high performance DS and SC superalloys are obtained. The investigation on alloy design, heat treatment, thermal analysis of DS process and the actions of alloying elements is fruitful, which provides the reliable base for determinating suitable alloy composition and the selection of optimal technology parameters. The study on precision investment cast technology has been carried out. The near-net-shape cast technique has been developed. The ceramic shell mould and the core for DS and SC castings have been researched. The various blades for aero-engines are made by using the DS and SC alloys and the technology. Particularly, the DS DZ22 alloy holow near-net-shape blades with the complex internal cooling passage for advanced aircraft engine have been successfully developed and produced in batches. At present, the main efforts in BIAM are aimed at hollow near-net-shape blades of single crystal superalloys.
Zhou Ruifa. Application Research on Powder Rene’95 Alloy[J]. Journal of Materials Engineering, 1991, 0(2): 24-28.
This paper describes the results of the application research on some key technologies of Rene’95 powder alloy, including the degassing effect of this alloy powder, microstructure and properties obtained after pre-heat treatment followed by the same forging and heat treatment, action of pre-heat treatment on increasing the stress rupture life and improving the toughness, effect of solution and ageing temperature, stress ageing, cooling medium on microstructure and properties of Rene’95, simulated test of isothermal forging of Rene’95, setup of simulated test of isothermal forging.
Zhao Zhenye. Theory, Development and Application of Aeronautical High Tensile Steels[J]. Journal of Materials Engineering, 1991, 0(2): 29-31.
This paper reviews the theroy and new technologies of strengthening and toughening for aeronautical high tensile steels, foreign high tensile steels and their application. The development of aeronautical high tensile structural steels and stainless steels, and new achievements of research on 300M and its application are mainly introduced in China.
Qiang Jun, Liu Bocao, Wu Yilei. Development of Aluminium-Lithium Alloys and Their Application Prospect[J]. Journal of Materials Engineering, 1991, 0(2): 36-39.
This paper briefly reviews the advantages of Al-Li alloys, their developing status and application prospects, and introduces the research work done in BIAM, A semisealed protective atmosphere melting and DC casting equipment are developed with the loss ratio of Li of less than 3%. A new coating material is developed to protect the melting container against attack of lithium. With the coating, impurity of Fe, Si can be controlled within 0.05% even using iron and steel crucible. The effect of heat treatment on properties of 8090 alloy is investigated, and the main properties are comparable to that reported by Alcan.
Zhang Zhifang, Liu Zhansheng. The Microstructure of Transformed β in Titanium Alloy TC6[J]. Journal of Materials Engineering, 1991, 0(2): 40-42.
The effects of cooling rate, solution temperature and ageing on the behavior of β phase transformation in TC6 have been studied by optical and electron metallography. The stuides show clearly the microstructure of transformed β can be obtained in TC6 taking water cooling or air cooling. This microstructure is increased and widened with elevated solution temperature. The ageing must be conducted for stabilizing transformed β phase.
Yu Kun. Development of Metal Matrix Composites in BIAM[J]. Journal of Materials Engineering, 1991, 0(2): 43-47.
A brief view is given for the general survey of metal matrix composites(MMC) and the outline of the research works in this field in Beijing Institute of Aeronautical Materials over the past 20 years with special emphasis on the development of boron filament, boron/aluminium and silicon carbide/aluminium composites.
Xie Jizhou. Investigation and Development of Fatigue and Fracture at High Temperature[J]. Journal of Materials Engineering, 1991, 0(2): 48-50.
In this paper, the investigation and development of fatigue and fracture at high temperature are reviewed, and some achievements obtained for last 15 years in Beijing Institute of Aeronautical Materials in the research of low cycle fatigue, fracture toughness, and fatigue crack propagation characteristics at high temperature are introduced.
Yuan Zhenming. Dynamic Nondestructive Evaluation on Damage and Fracture of Composites[J]. Journal of Materials Engineering, 1991, 0(2): 51-54.
In this paper, the damage and fracture of FRP are evaluated by acoustic emission as a dynamic nondestructive testing technology. The contents include the evaluation of the quality of carbon bundle, damage and fracture of laminates, the evaluation of the structure integrity of assemblies and prediction of the burst pressure of GFRP bottles.
