Microstructure refinement and improvement of mechanical properties of Ti46Al8Nb0.9B alloys by electromagnetic cold crucible continuous solidification

2022 ◽  
Vol 140 ◽  
pp. 107391
Author(s):  
Yongzhe Wang ◽  
Wei Li ◽  
Hong Yuan ◽  
Hongsheng Ding ◽  
Ruirun Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Cold Crucible ◽  
Microstructure Refinement

scholarly journals Magnetic and Mechanical Properties of the High Purity Fe-3 mass%Si Alloy by Cold Crucible Levitation Melting

2018 ◽  
Vol 82 (12) ◽  
pp. 476-483
Author(s):  
Shota Nakagawa ◽  
Ryosuke Watanabe ◽  
Iwao Sasaki ◽  
Masaaki Takezawa ◽  
Yoichi Horibe ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
High Purity ◽  
Cold Crucible ◽  
Levitation Melting

Variation of Microstructure and Mechanical Properties of ZW61 Magnesium Alloy Solidified under Different Pressures

2022 ◽  
Vol 327 ◽  
pp. 3-10
Author(s):  
Shu Sen Wu ◽  
Xiao Gang Fang ◽  
Shu Lin Lü ◽  
Long Fei Liu ◽  
Wei Guo
Keyword(s):  
Mechanical Properties ◽  
High Pressure ◽  
Volume Fraction ◽  
Applied Pressure ◽  
Second Phase ◽  
Cast State ◽  
Microstructure And Properties ◽  
Microstructure Refinement ◽  
Porosity Reduction ◽  
Average Grain Size

There is little datum related to microstructure and properties of Mg alloys squeeze-casted with pressure over 200 MPa. In this study, the microstructure and properties of Mg-6Zn-1.4Y (ZW61) alloy solidified under 100MPa to 800MPa were investigated. The results show that a remarkable microstructure refinement and porosity reduction can be reached through solidification under high pressure. The average grain size and the volume fraction of second phase, i.e. quasicrystal I-phase, decrease continuously with the increase of applied pressure. The tensile properties, especially elongation, are obvious enhanced because of the microstructure refinement and castings densification under high pressure. The ultimate tensile strength and elongation of ZW61 alloy in as-cast state are 243 MPa and 18.7% when the applied pressure is 800 MPa, which are increased by 35% and 118% respectively, compared with that of the gravity castings.

Effect of Electromagnetic Stirring on the Microstructure and Mechanical Properties of the High Speed Steel

2012 ◽  
Vol 724 ◽  
pp. 291-294 ◽  
Author(s):  
Cong Rong Zhang ◽  
Xu Ding Song ◽  
Jun Yang ◽  
Jie Dong
Keyword(s):  
Mechanical Properties ◽  
High Speed ◽  
High Speed Steel ◽  
Electromagnetic Stirring ◽  
Microstructure Refinement ◽  
Comprehensive Properties ◽  
Microstructure And Mechanical Properties

In order to improve the microstructure and mechanical properties of High Speed Steel (HSS), electromagnetic stirring method is adopted to enhance the solidification of target materials in this paper. The results show that optimization of the microstructure, refinement of the grain, reducing in segregation of the alloy elements, and improvement of the comprehensive properties of HSS can be obtained by the electromagnetic stirring through changing the morphology and distribution of the carbide.

The Effect of Large Reduction on the Microstructure and Properties for As-Hot Rolled Dual-Phase Nb-Bearing Steel

2011 ◽  
Vol 284-286 ◽  
pp. 1101-1105
Author(s):  
Hong Mei Zhang ◽  
Li Feng Qiao
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Yield Strength ◽  
Dual Phase Steel ◽  
Bearing Steel ◽  
Dual Phase ◽  
Large Reduction ◽  
Microstructure Refinement ◽  
The Matrix ◽  
Hot Rolled

The effect of reduction on the microstructure refinement and mechanical properties of the as-hot rolled dual-phase Nb-bearing steel were studied at laboratory. It is found that the dual-phase steel displays clearly classic dual phase morphology which is ferrite and martensite or bainsite, and the fine island or lath martinsite is dispersed on the matrix of ferrite by the observation of microstructure. The grain can be refined, and the increased precipitated second particles are fined and dispersed with the increasing of reduction. The mechanical properties determination result shows that the mechanical properties have greatly improved by large reduction. The tensile strength obtained in the laboratory is up to 680MPa, the ratio of yield strength and tensile strength is low, and the elongation is better.

Microstructure control and mechanical properties of Ti44Al6Nb1.0Cr2.0V alloy by cold crucible directional solidification

2014 ◽  
Vol 614 ◽  
pp. 67-74 ◽  
Author(s):  
Shulin Dong ◽  
Ruirun Chen ◽  
Jingjie Guo ◽  
Hongsheng Ding ◽  
Yanqing Su ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Directional Solidification ◽  
Cold Crucible ◽  
Microstructure Control

The Microstructure and Mechanical Properties of the Ni-Al-V Alloys Prepared by Levitation and Crystallization in Copper Mould

2011 ◽  
Vol 172-174 ◽  
pp. 475-480
Author(s):  
Tomasz Czeppe ◽  
Galia F. Korznikova ◽  
Zbigniew Świątek ◽  
Anna Sypień ◽  
Alexander V. Korznikov ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Solid Solution ◽  
Cross Section ◽  
Small Volume ◽  
Cold Crucible ◽  
Levitation Melting ◽  
Microstructure And Mechanical Properties ◽  
Eutectoidal Decomposition ◽  
High Cooling Rates ◽  
Copper Mould

Microstructure and mechanical properties of NiAlV alloys of the composition belonging to the pseudo-binary Ni3Al-Ni3V cross-section were investigated. The samples were prepared by the cold crucible levitation melting (CCLM) and by re-melting and crystallizing in the small volume copper mould. The phase composition of the samples, with should result from the eutectoidal decomposition was not found. Instead the Ni3(Al,V) and Ni(Al,V) solid solution or seldom disordered solid solution were retained due to the relatively high cooling rates. In the compression test the NiAlV alloys crystallized in the copper mould revealed high ductility and strength.

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