Controlling Corrosion Resistance of a Biodegradable Mg–Y–Zn Alloy with LPSO Phases via Multi-pass ECAP Process
Controlling Corrosion Resistance of a Biodegradable Mg–Y–Zn Alloy with LPSO Phases via Multi-pass ECAP Process
复制标题
通过多道 ECAP 工艺控制具有 LPSO 相的可生物降解 Mg-Y-Zn 合金的耐腐蚀性能
DOI：
10.1007/s40195-020-01042-y
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发表时间：
2020-04
影响因子：
3.5
通讯作者：
Ma Aibin
中科院分区：
文献类型：
--
作者：
Wang Lisha;Jiang Jinghua;Saleh Bassiouny;Xie Qiuyuan;Xu Qiong;Liu Huan;Ma Aibin
具有长周期堆垛结构的稀土镁合金在生物医学领域有着巨大的应用潜力。研究了18 R LPSO组织Mg_（98.5）Y_1Zn_（0.5）合金经等通道转角挤压（ECAP）后的显微组织和腐蚀行为。结果表明，ECAP工艺改变了Mg_（98.5）Y_1Zn_（0.5）合金中LPSO颗粒的尺寸和分布，从而控制了合金的总腐蚀速率。在0 ~ 12 p的ECAP过程中，晶粒尺寸从铸态的160-180 μm减小到6-8 μm（12 p）。LPSO结构变得扭结（4p），然后开始破碎成更小的碎片（8 p），最后粉碎成细颗粒并均匀地重新分布在基质中（12 p）。ECAP试样在模拟体液中的腐蚀速率从0 p降低到2.35mm/年（8 p），其中12 p试样的腐蚀速率最高，为4.54mm/年。
Mg-RE (rear earth) alloys with long period stacking (LPSO) structures have great potential in biomedical applications. The present work focused on the microstructure and corrosion behaviors of Mg_(98.5) Y_1 Zn_(0.5) alloys with 18R LPSO structure after equal channel angular pressing (ECAP). The results showed that the ECAP process changed the grain size and the distribution of LPSO particles thus controlled the total corrosion rates of Mg_(98.5) Y_1 Zn_(0.5) alloys. During the ECAP process from 0p to 12p, the grain size reduced from 160–180 μm (as-cast) to 6–8 μm (12p). The LPSO structures became kinked (4p), then started to be broken into smaller pieces (8p), and at last comminuted to fine particles and redistributed uniformly inside the matrix (12p). The improvement in the corrosion resistance for ECAP samples was obtained from 0p to 8p, with the corrosion rate reduced from 3.24 mm/year (0p) to 2.35 mm/year (8p) in simulated body fluid, and the 12p ECAP alloy exhibited the highest corrosion rate of 4.54 mm/year.
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影响因子：
8.4
作者：
Li, Ran;Gu, Yizhuo;Zhang, Zuoguang
通讯作者：
Zhang, Zuoguang
DOI：
10.4028/www.scientific.net/msf.3.419
发表时间：
1985-01
期刊：
Materials Science Forum
影响因子：
--
作者：
S. Garg;Y. J. Bhatt;R. Venkataramani
通讯作者：
S. Garg;Y. J. Bhatt;R. Venkataramani
影响因子：
2.9
作者：
G. Garcés;P. Pérez;R. Barea;J. Medina;A. Stark;N. Schell;P. Adeva
通讯作者：
G. Garcés;P. Pérez;R. Barea;J. Medina;A. Stark;N. Schell;P. Adeva
影响因子：
3
作者：
Yong Zhang;Min-quan Wang
通讯作者：
Yong Zhang;Min-quan Wang
影响因子：
3
作者：
Pu Yongping;Zhang Lei;Yao Mouteng;Ge Wanyin;Chen Min
通讯作者：
Pu Yongping;Zhang Lei;Yao Mouteng;Ge Wanyin;Chen Min