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matrix is mainly the plate-like η phase, and the other precipitated phase size is relatively small. After the solid solution aging treatment, the strengthening phases of the extruded BP/7A04 Al composites... mainly consist of plate-like η (MgZn2) phase and bright white band-shaped or ellipsoidal T (Al2Mg3Zn3) phase. The bonding interface, high dislocation density and dispersion strengthening phase......
increased, causing the stronger solid solution strengthening effects (about 30% increase in σb). Also, as reinforcement of the main bond network and the improvement of stability of the alloy system due... bond strength of Ni-Cr-Mo-Cu alloy are enhanced greatly, which causes the effects of solution strengthening. As a result, the strength of the tested Ni-Cr-Mo-Cu alloy (570-700 MPa) is not only higher......
. And the coarse β-Mg2Si phase contributes little to the strength of the studied alloy as this precipitate is incoherent with the Al matrix. Furthermore, the effect of solid solution strengthening... of solid solution is reduced, resulting in the reduction of the follow-up aging strengthening effect. Moreover, the vacancy concentration becomes low due to the slow cooling rate, which may decrease......
of 313 MPa, and δ=20.3%) owing to strong grain boundary strengthening and improvement of Schmid factor for {0001} basal slip. The aggregation of microvoids around the MgZnCu phase mainly accounts... evolution; strengthening mechanism 1 Introduction Magnesium (Mg) alloys are desirable candidates as the lightest structural materials in aerospace and automotive industries owing to their low density and high......
场作用,可抑制位错剪切进入γ′相,是使合金在稳态蠕变期间保持较低应变速率的主要原因. 关键词:单晶高温合金;成分偏析;固溶热处理;蠕变;变形机制 中图分类号:TG146.1 文献标志码:A Influence of solution temperature on composition segregation and creep..., Shenyang 110870, China) Abstract: By means of solution treatment at various temperatures, creep properties measurement and microstructure observation, the effects of heat treatment......
; chemical segregation 1 Introduction In modern Ni-base superalloys, more and more alloying elements were added to enhance the solid solution strengthening effects, especially the refractory elements... containing cobalt, it is difficult for rhenium to form directional and incompressible Ni-Re bond and the effect of Re is only the ordinary solid solution strengthening, then the effect of Re decreasing......
. Beijing Institute of Aerospace Systems Engineering, Beijing 100076, China) Abstract: Effect of solution treatment and pre-deformation before aging on tensile properties and microstructures of a new ultra-high strength Al-Cu-Li-X alloy were investigated. The result shows that, as solution-treated for 40 min at 500-540 ℃, the strength of the aged alloy increases firstly then keeps a relatively same......
%, respectively, which are higher than those of the conventional cast-T6 alloy, especially with the YS increased by 122 MPa. The main strengthening mechanisms of the SLMed GZ151K alloy are fine... refinement; Mg-Gd-Zn; strengthening mechanism 1 Introduction As one of the lightest structural materials, magnesium-rare earth (Mg-RE) alloys with high specific strength and low density are the most promising......
TC4ELI合金的强度;降低固溶温度,减小固溶冷却速率,降低时效温度可以提高TC4ELI合金的冲击韧性和断裂韧度;TC4ELI合金金相组织中片状α相的形貌对合金的冲击韧性和断裂韧度起决定作用. 关键词:TC4ELI钛合金;固溶时效;片状α相 中图分类号:TF 804.3 文献标志码:A Effects of solution treatment...: The effects of solution treatment on room temperature tensile properties, hardness, impact toughness, fracture toughness and metallurgical structure of TC4ELI titanium alloy were studied. The results show......
-grained WHAs by restraining the growth of W grains is the main development trend. Adding alloying elements or oxides in W-Ni-Fe composite powders can cause fine-grained strengthening, solution... strengthening; solution strengthening; mechanical property 高密度钨合金(Tungsten heavy alloys, WHAs)是由体心立方W晶粒弥散分布于低熔点韧性金属(如Fe,Ni,Co,Cu等)组成的两相复合材料.合金元素的多元化和应用领域的扩展导致高密度钨合金涵盖的合金种类越来越多,因而很多情况下也简称为"钨合金"[1-3].高密度W-Ni......