当前位置：
X-MOL 学术
›
Adv. Eng. Mater.
›
论文详情
Our official English website, www.x-mol.net, welcomes your
feedback! (Note: you will need to create a separate account there.)
Influence of Thermal Processing on Resoloy Wire Microstructure and Properties
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-12-23 , DOI: 10.1002/adem.202001278 Ju Xue 1 , Adam J. Griebel 2 , Yaping Zhang 3 , Cristina Romany 1 , Bowen Chen 1 , Jeremy Schaffer 2 , Timothy P. Weihs 1, 4
Advanced Engineering Materials ( IF 3.4 ) Pub Date : 2020-12-23 , DOI: 10.1002/adem.202001278 Ju Xue 1 , Adam J. Griebel 2 , Yaping Zhang 3 , Cristina Romany 1 , Bowen Chen 1 , Jeremy Schaffer 2 , Timothy P. Weihs 1, 4
Affiliation
|
Magnesium fine wires are critical components for the fabrication of various absorbable implants. Herein, Resoloy fine wires with diameters of 200 and 500 μm are prepared with a multipass, cold‐drawing technique before undergoing two brief thermal anneals at 350 or 450 °C. The as‐drawn, cold‐worked (CW) wires show small but elongated α‐Mg grains, with their long axes and basal planes parallel to the drawing direction. Fine, continuous, and uniformly distributed Mg24Dy5 particles are observed within the wire. Although the brief anneals at 350 and 450 °C do not alter the texture of the Mg grains or the area fraction, aspect ratio, or distribution of the secondary phase, they do enable recovery and partial recrystallization at 350 °C and complete recrystallization at 450 °C, thereby providing a wide range of mechanical properties. The 200 μm wires display slightly higher strengths and slightly lower elongations. Modified simulated body fluid (m‐SBF) immersion results indicate that the Resoloy wires exhibit relatively uniform corrosion with rates as low as 1.72 ± 0.09, 1.44 ± 0.21, and 1.97 ± 0.10 mm y−1 for the cold‐worked, 350 °C, and 450 °C wires with 500 μm diameter, respectively.
中文翻译：
热处理工艺对Resoloy线材组织和性能的影响
镁细线是制造各种可吸收植入物的关键组件。在此，采用多道次冷拔技术制备直径为200和500μm的Resoloy细线，然后在350或450°C进行两次短暂的热退火。拉伸后的冷加工（CW）焊丝显示出细小但细长的α-Mg晶粒，其长轴和基面平行于拉伸方向。细，连续且均匀分布的Mg 24 Dy 5焊丝内观察到颗粒。尽管在350和450°C下进行短暂的退火不会改变Mg晶粒的织构或面积分数，纵横比或第二相的分布，但它们确实能够在350°C下恢复和部分重结晶，并在450°C时完全重结晶°C，从而提供广泛的机械性能。200μm的导线显示出较高的强度和较低的延伸率。修改后的模拟体液（m‐SBF）浸入结果表明，Resoloy焊丝在350°C的冷作条件下表现出相对均匀的腐蚀，腐蚀速率低至1.72±0.09、1.44±0.21和1.97±0.10 mm y -1，以及直径分别为500μm的450°C导线。
更新日期：2020-12-23
中文翻译：
热处理工艺对Resoloy线材组织和性能的影响
镁细线是制造各种可吸收植入物的关键组件。在此，采用多道次冷拔技术制备直径为200和500μm的Resoloy细线，然后在350或450°C进行两次短暂的热退火。拉伸后的冷加工（CW）焊丝显示出细小但细长的α-Mg晶粒，其长轴和基面平行于拉伸方向。细，连续且均匀分布的Mg 24 Dy 5焊丝内观察到颗粒。尽管在350和450°C下进行短暂的退火不会改变Mg晶粒的织构或面积分数，纵横比或第二相的分布，但它们确实能够在350°C下恢复和部分重结晶，并在450°C时完全重结晶°C，从而提供广泛的机械性能。200μm的导线显示出较高的强度和较低的延伸率。修改后的模拟体液（m‐SBF）浸入结果表明，Resoloy焊丝在350°C的冷作条件下表现出相对均匀的腐蚀，腐蚀速率低至1.72±0.09、1.44±0.21和1.97±0.10 mm y -1，以及直径分别为500μm的450°C导线。
京公网安备 11010802027423号