After re-austenitization and tempering, the dissolution of Laves phase is observed while grain size and microhardness have not changed significantly. A model is suggested to quantify the dissolution of W-containing Laves phase. Thermo-Calc is used to predict driving forces for precipitation of ...
A Laves Phase is a specific crystalline structure found in certain RE-Mn compounds, where different rare earth elements result in variations such as cubic (C15 type) for Tb and Dy, and hexagonal (C14 type) for Ho and Er. AI generated definition based on: Handbook on the Physics and Chemis...
In fact, the differences in precipitation and coarsening of Laves phase between the FGHAZ and BM are closely correlated to the grain size. Furthermore, the matrix of FGHAZ is softened due to its polygonal sub-grains with low dislocation densities replacing the martensitic lath structure. The ...
7.2.4 Laves Phase Laves phases are intermetallic compounds that have a stoichiometry of AB2 and are formed when the atomic size ratio is between 1.05 and 1.67. There are three classes of Laves phases, namely, cubic MgCu2 (C15), hexagonal MgZn2 (C14), and hexagonal MgNi2 (C36). In th...
latticedistortionand grain sizealsoincreased,the hardnessandYoung’s modulusofLaves phaseMg(Cul.xAIx)2 increasedorderly,the density of products also improved,but the compressivestrength increasedfirstand thendecreased,thenumericalvalueofcompressivestrength wasmaximumat x=O.25.ThefracturesurfaceofLaves ...
Laves相TiCrs 2微粒增强Ti基合金的制备及其组织 能和力学行为的分析.docx,摘摘要 本文通过非囱耗磁控电弧熔铸和700 4C x20h高游邋火,制备出了Cr含餐为18～ 30%豹含Laves桷7一TiCr2过共撬Ti-Cr含金。坶宠发蠛,铸态过共掇Ti—Cr仑金的 组织为单相D—Ti;这种铸态含金在70
Laves phase TiCr2 will be precipitated along the grain boundaries and in the matrix when the alloys are annealed at 700℃, and an eutectoid transformation β-Ti→α-Ti+TiCr2 happens in some parts of the alloy during air cooling. The higher the chromium content,the more the quantity and ...
After re-austenitization and tempering, the dissolution of Laves phase is observed while grain size and microhardness have not changed significantly. A model is suggested to quantify the dissolution of W-containing Laves phase. Thermo-Calc is used to predict driving forces for precipitation of ...
The microstructure analysis indicates that during the SPS process, the grain size of NbCr2 Laves phase is significantly refined and trace amounts of Nb and Cr solid solutions are observed to distribute among the grain boundaries. In this condition, the remarkable enhancement in hardness and ...
Furthermore, grain growth can be restricted by Cr(VNb)2 Laves phase precipitation in the microstructure, which reduces grain size, and improve hardness. The increased Cr composition to form the Cr(VNb)2 Laves phase in CrNbTaVW RHEA thus led to solid solution strengthening, which further ...