新しい凖結晶材料の機械的性質に関する研究

新型晶体材料力学性能研究

• 批准号: 05855014
• 负责人: 松室 昭仁
• 金额: $ 0.51万
• 依托单位: Nagoya University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Encouragement of Young Scientists (A)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 无数据
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-05855014/
• 关键词: 準結晶材料; 超高圧力焼結; 機械的性質; 複合材料; 超潤滑; 微小領域摩擦試験機

高機能性が期待される凖結晶材料の機械的性質を評価するため,メカニカルアロイング法で作製されたMg_<50>Al_<15>Zn_<35>,Mg_<45>Al_<15>Zn_<40>およびMg_<39.5>Al_<37.5>Zn_<23>凖結晶粉末を5.4Gpaの超高圧固化成形によりバルク体を作製する条件を検討し,ビッカース硬度,圧縮試験により機械的性質を評価した.得られた結果は以下の通りである.(1)準結晶単相の成形体を,圧力5.4Gpa,成形時間4時間のもとMg_<45>Al_<15>Zn_<40>系では450℃,Mg_<50>Al_<15>Zn_<35>系およびMg_<39.5>Al_<37.5>Zn_<23>系では250℃で緻密な固化成形を作製することができた.(2)得られた機械的性質は,常圧平衡相で得られる結晶相と比較するといずれの組成でも数十%向上した.これは準結晶特有の原子構造が反映されており,高強度材料としての有望性が示唆された.また,延性を改善し機械加工性を高めるために,Mg_<45>Al_<15>Zn_<40>準結晶相に結晶相のMgを複合した場合の性質の変化および超潤滑特性が期待できる摩擦特性についてさらに検討を加えた.(3)脆性的なMg_<45>Al_<15>Zn_<40>準結晶に延性を付加する方法としてMg結晶相との複合化は有効な手段であった.その際に超高圧力による処理を用いることによって二相を保ったまま緻密な成形体を得ることが可能であった.(4)Mgに対してMg_<45>Al_<15>Zn_<40>準結晶を複合化させ,延性が顕著に現れ,加工性が改善できることがわかった.(5)従来にない微小な領域で固体の摩擦係数を測定することのできる摩擦試験機を考案・作製し,光てこの原理を用いた摩擦試験機が原理・実験の両面において計測可能であった.準結晶材料を測定した結果,結晶材料と比較して1/5程度の摩擦係数であることがわかった.

The high-performance mechanical properties of crystalline materials are expected to be tested, and the performance of Mg_<50>Al_<15>Zn_<35>,Mg_<45>Al_<15>Zn_<40> materials is expected to be affected by the use of high-performance materials. The mechanical properties of the ultra-high temperature curing process, the mechanical properties, the hardness, the mechanical properties and the mechanical properties of the ultra-high temperature curing system were studied by means of the crystal powder 5.4Gpa ultra-high temperature curing system. The following results are obtained. (1) the standard crystal phase forming body, force 5.4Gpa, forming time 4 time tempering Mg_<45>Al_<15>Zn_<40> temperature 450 ℃, Mg_<50>Al_<15>Zn_<35> temperature Mg_<39.5>Al_<37.5&gt. Zn_<23> is a kind of high density curing machine at 250 ℃. (2) the mechanical properties of the machine are obtained, and the mechanical properties of the machine are obtained. the results show that the mechanical properties of the machine are much higher than those of the mechanical properties. The formation of atoms in the crystal is unique to the formation of atoms, and the prospect of high-strength materials is instigated. The ductility improves the machinability of the machine. The high temperature temperature increases, the Mg_<45>Al_<15>Zn_<40> preparation, the crystal phase, the Mg phase, the complex phase, the superslip property, the friction property, the temperature, the temperature and the temperature. (3) brittle Mg_<45>Al_<15&gt Zn_<40> preparation crystal ductility payment plus method to improve the crystal phase of Mg crystal phase synthesis is very important. It is possible that the two-phase Mg_<45>Al_<15>Zn_<40&gt can be obtained by using the superelevation force. (4) the two-phase Mg_<45>Al_<15>Zn_<40&gt. The standard results show that the mechanical properties are complex, the ductility is affected, and the processing properties are improved. (5) in recent years, the measurement of solid friction in the field of micro-scale has been carried out. The test case of the friction test machine has been tested, and the optical test principle is based on the principle of the friction tester. According to the results of the test results of the crystalline materials, the results show that the crystalline materials have a higher friction ratio of 1 to 5 degrees than that of the normal crystalline materials.