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Bridgman法制备塑性钛基轻质非晶复合材料张建庭1,乔珺威1,张勇1(1.北京市北京科技大学新金属材料国家重点实验室)摘 要:通过Bridgman定向凝固法成功制备了内生枝晶增塑的轻质钛基非晶复合材料.与传统的Cu模吸铸法相比,Bridgman法有效消除了铸态组织中的孔洞,得到了更均匀的微观组织,且能通过调节抽拉速度来控制枝晶相的尺寸和分布,进而优化其力学性能.当抽拉速度为1.4 mm/s时,合金压缩屈服强度,断裂强度和断裂塑性分别达到1956 MPa,2706 MPa和18.0%,且有明显的加工硬化现象.......
): 1106-1109. [2] GREER A L, MA E. Bulk metallic glasses: At the cutting edge of metals research[J]. MRS Bulletin, 2007, 32(8): 285-301. [3] GAO J H, GUAN S K, REN Z W, SUN Y F, ZHU S J, WANG B... on plastic deformability of Zr-based bulk metallic glasses[J]. Science China Physics, Mechanics and Astronomy, 2010, 53(3): 415-418. [8] LIU Y H, LIU C T, WANG W H, INOUE A, SAKURAI T, CHEN M W......
. Key words: metallic glasses; nanocrystals; catalysis; hydrogen storage ... metallic glasses is most important for the study of their oxidation rule[1-2] and their potential application, e.g. as penetrators[3-6], as materials for hydrogen or deuterium storage[7], or as catalysts......
Role of late transition metals on pitting resistance of Zr-Ti-(Cu, Ni,Co)-Al bulk metallic glasses in 0.6 M NaCl aqueous solutionYu Li1,2,Jian Xu11. Shenyang National Laboratory for Materials Science... metallic glasses(BMGs)were selected,including the Zr46Ti2Cu45Al7,Zr61Ti2Cu25Al12,Zr55Ti4Ni22Al19and Zr55Ti2Co28Al15,due to their robust glass-forming ability and containing a single species of late......
="ChDivSummary"><正>The effects of Ta on the characteristics of the Zr-base BMG (bulk metallic glass) were investigated. Zr55Al10Ni5Cu30-xTax (x=1, 2,4) bulk metallic glasses (BMGs) with 3.5 mm...Effects of small amount Ta on the characteristics of the Zr-Al-Ni-Cu-Ta bulk metallic glassHongchao Kou, Xidong Hui, Xiongjun Liu, Xiping Song, Guoliang Chen, and Kefu Yao State Key Laboratory......
was dominated by abrasive wear compared with an adhesive wear controlled process in the tests performed in argon. Key words: bulk metallic glasses; tribological behavior; oxidation; wear mechanism 1 Introduction Over the past two decades the tribological properties of bulk metallic glasses (BMGs) have been of great attraction as promising candidates for high wear applications because of their comparatively......
Effect of Nb on the corrosion behavior of continuous bulk metallic glass-coated steel wire compositesXiao-hua Chen,Bao-yu Zhang,Xi-dong HuiState Key Laboratory for Advanced Metals and Materials, University of Science and Technology Beijing摘 要:(Zr41.2Ti13.8Cu12.5Ni10Be22.5 )100xNbx(at%, x=0 and 8) bulk metallic glasses (BMGs) were coated on the surface......
University摘 要:The high temperature deformation behaviors and thermal workability of Cu43Zr48Al9 and(Cu43Zr48Al9)98Y2 bulk metallic glasses in the supercooled... metallic glasses were constructed considering the power dissipation efficiency. The optimum domain for thermal workability of the bulk metallic glass was located using the processing map, where the power......
University摘 要:The high temperature deformation behaviors and thermal workability of Cu43Zr48Al9 and(Cu43Zr48Al9)98Y2 bulk metallic glasses in the supercooled... metallic glasses were constructed considering the power dissipation efficiency. The optimum domain for thermal workability of the bulk metallic glass was located using the processing map, where the power......
beyond the glass transition temperature (Tg). Zr-based multicomponent bulk metallic glasses have high glass forming ability and exhibit a large supercooled liquid region (ΔTx, defined as the temperature... of SRORs in the Zr60Al15Ni25 bulk metallic glass is overcritical. Fig.3 HRTEM images of glasses M0 (a) and M12 (b), showing existence of numerous of short-range order regions The isochronal DSC......
