Investigation on the Microstructure Characterization and Aging Response of Rapidly Solidified Mg-6wt%Zn-5wt%Ca Alloy Produced by Atomization-Twin Roll Quenching Technology

Zhou, Taofa; Yang, Ming‐Bo; Zhan, Jianming; Peng, Chengyun; Hu, Jianjun; Kang, Chen; Zhou, Zhiming; Chen, Zhenhua

doi:10.1080/10426914.2011.557129

Cited by 7 publications

(1 citation statement)

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“…For these techniques, RS, including suction casting and injection, represent one of important non-equilibrium processing technique, and it has been frequently employed to change the microstructure and enhance the alloy properties. When compared to conventional solidification (CS), RS demonstrates a higher cooling rate (R C , approximately 1 × 10 4 K·s −1 ) than CS (less than 50 K·s −1 ), and this results on the microstructure, as long as on the physical and chemical properties of alloy, which present a significant change during RS processes [18][19][20].…”

Section: Introductionmentioning

confidence: 99%

Structure and Martensitic Transformation in Rapidly Solidified CoNiAlFe Alloy

Chen

Shuai

et al. 2017

Metals

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Abstract:Housler based magnetic controlled shape memory alloys are characterized by a large magnetic field induced strain. The strain was dependent on the twin martensite structure rearrangement, and the rapid solidification technology had a significant influence on the microstructure, physical, and chemical properties of the alloy. Thus, the structure and the martensitic transformation changes of Co 33 Ni 31 Al 27 Fe 9 during the rapidly solidified process were studied. The microstructure of Co 33 Ni 31 Al 27 Fe 9 with furnace cooled and rapid solidification (RS) constitutes a dual-phase structure, β phase and γ phase in a low cooling rate and martensite and γ phase in a high cooling rate. The γ phase at the grain boundaries reduced and became more fragile by raising the R C value. The one-step austenite-martensite phase transformation occurred during the process of heating and cooling. The phase transition temperature presents an increasing trend by rising the cooling rate, even to over the room temperature. Moreover, the martensite structure in Co 33 Ni 31 Al 27 Fe 9 constitutes a typical L1 0 -type twinning structure.

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Section: Introductionmentioning

confidence: 99%