Alloying effects of Ga on the Co-V-Si high-temperature shape memory alloys
Alloying effects of Ga on the Co-V-Si high-temperature shape memory alloys
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Ga对Co-V-Si高温形状记忆合金的合金化作用
DOI：
10.1016/j.matdes.2016.12.021
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发表时间：
2017-02
影响因子：
8.4
通讯作者：
Liu Xingjun
中科院分区：
文献类型：
--
作者：
Jiang Hengxing;Wang Cuiping;Xu Weiwei;Xu Xiao;Yang Shuiyuan;Kainuma Ryosuke;Liu Xingjun
制备了Co64V15Si21-−(x=4，6，8，10)合金，研究了Ga对Co-V-Si高温形状记忆合金的晶体结构、相变行为、热循环稳定性、组织演变、力学性能和形状记忆行为等性能的影响。结果表明，Co64V15Si17Ga4合金由L21型母相转变为D022型马氏体单相。随着Ga含量的增加，R相沿马氏体晶界出现，马氏体相变温度迅速下降。此外，Co64V15Si17Ga4合金在反复加热到~800℃的高温下仍具有良好的热循环稳定性和稳定的组织。另一方面，对于(马氏体+R)双相合金(Co64V15Si15Ga6、Co64V15Si13Ga8和Co64V15Si11Ga10)，在热循环过程中会析出(εCo)相，并在不同温度下同时提高各自的热循环稳定性。此外，尽管过量的Ga掺杂显著降低了合金的力学性能，但仍然可以得出结论：Ga的掺杂对Co-V-Si高温形状记忆合金的形状记忆效应的发展有积极的作用。
Co64V15Si21 − xGax(x = 4, 6, 8, 10) alloys have been prepared to investigate the alloying effects of Ga on various properties of Co-V-Si high-temperature shape memory alloys, including crystal structure, transformation behavior, thermal cycle stability, microstructure evolution, mechanical property and shape memory behavior. Results show that the D022-type martensite single-phase is transformed from the L21-type parent phase in Co64V15Si17Ga4alloys. With the increase of Ga content,Rphase appears along grain boundaries of martensite and martensitic transformation temperatures decrease rapidly. Furthermore, the Co64V15Si17Ga4alloy exhibits excellent thermal cycle stability and stable microstructure even after heated to high temperatures of ~ 800 °C repeatedly. On the other hand, for the (martensite +R) dual-phase alloys (i.e., Co64V15Si15Ga6, Co64V15Si13Ga8and Co64V15Si11Ga10), (εCo) phase precipitates during thermal cycle process, with respective thermal cycle stabilities enhanced at different temperatures simultaneously. In addition, although excess Ga addition deteriorates the mechanical property significantly, it is still concluded that the doping of Ga has a positive effect on the development of shape memory effect of Co-V-Si high-temperature shape memory alloys.
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影响因子：
6.2
作者：
A. Nespoli;C. Biffi;E. Villa;A. Tuissi
通讯作者：
A. Nespoli;C. Biffi;E. Villa;A. Tuissi
影响因子：
9.4
作者：
E. Doğan;I. Karaman;Y. Chumlyakov;Zhiping Luo
通讯作者：
E. Doğan;I. Karaman;Y. Chumlyakov;Zhiping Luo
DOI：
10.1201/9780849391088.ax2
发表时间：
2006-12
期刊：
--
影响因子：
--
作者：
V. Konchits
通讯作者：
V. Konchits
影响因子：
4.4
作者：
R. Santamarta;E. Cesari;J. Muntasell;J. Font;J. Pons;P. Ochin
通讯作者：
R. Santamarta;E. Cesari;J. Muntasell;J. Font;J. Pons;P. Ochin
影响因子：
6
作者：
A. M. Pérez-Sierra;J. Pons;R. Santamarta;I. Karaman;R. Noebe
通讯作者：
A. M. Pérez-Sierra;J. Pons;R. Santamarta;I. Karaman;R. Noebe