| 查看: 288 | 回复: 0 | |||
784214630金虫 (小有名气)
|
[交流]
The processing of ultrafine-grained Mg tubes for biodegradable stents
|
|
An investigation was carried out on equal-channel angular pressing (ECAP) and extrusion processing of a ZM21 Mg alloy to obtain an improved candidate material for the manufacturing of biodegradable Mg stents. Ultrafine-grain size billets of the ZM21 alloy were obtained by two-stage ECAP aimed at achieving an initial refining of the structure at 200 C and then reaching the submicrometer grain size range by lowering the processing temperature down to 150 C. The investigation revealed a significant improvement in the properties of the ECAP-treated samples compared with the starting coarse-grained ZM21 alloy. The 0.2% yield strength rose from 180 to 340 MPa after 150 C ECAP processing, while maintaining a fairly high tensile ductility. The ultrafine ZM21 alloy billets were then used for the extrusion of stent precursors having the form of small-size tubes. The grain size after extrusion remained in the submicrometer range while the hardness was revealed to be significantly higher than that of the coarse-grained ZM21 Mg alloy. It was demonstrated that processing of biodegradable Mg stent having an ultrafine-grained microstructure by ECAP and low-temperature extrusion is feasible and that the obtained products feature promising properties. |
回复此楼» 本帖附件资源列表
-
欢迎监督和反馈：小木虫仅提供交流平台，不对该内容负责。
本内容由用户自主发布，如果其内容涉及到知识产权问题，其责任在于用户本人，如对版权有异议，请联系邮箱：xiaomuchong@tal.com - 附件 1 : The_processing_of_ultrafine-grained_Mg_tubes_for_biodegradable_stents_(2).pdf
2015-09-29 12:38:30, 2.52 M
» 猜你喜欢
CSC & MSCA 博洛尼亚大学能源材料课题组博士/博士后招生｜MSCA经费充足、排名优
已经有6人回复
-
德国Karlsruhe Institute of Technology招收电化学储能及联合培养CSC博士等
已经有20人回复
-
物理化学论文润色/翻译怎么收费?
已经有55人回复
-
德国Karlsruhe Institute of Technology招收电化学储能及联合培养CSC博士
已经有24人回复
-
德国Karlsruhe Institute of Technology招收电化学储能及联合培养CSC博士
已经有1人回复
-
固态锂金属电池迁移数计算求助
已经有1人回复
-
荷兰奈梅亨大学赵文博与Galimberti课题组招收理论计算CSC博士 2000 欧元/月+房补
已经有0人回复
-
26储能博士申请自荐
已经有22人回复
-
上海交通大学--宁波东方理工大学电池方向博士招生
已经有10人回复
-
海南大学全国重点实验室杨金霖老师招收储能电池方向博士生（2026年3月报名，9月入学）
已经有0人回复
-
海南师范大学2026年博士研究生招收 (在职想提升学历人员可报考) 申请考核制+普通招考
已经有0人回复
