Property improvement of TiNi by Cu addition for orthodontics applications

Conference proceedings article

ผู้เขียน/บรรณาธิการ

กลุ่มสาขาการวิจัยเชิงกลยุทธ์

ไม่พบข้อมูลที่เกี่ยวข้อง

รายละเอียดสำหรับงานพิมพ์

รายชื่อผู้แต่ง: Phukaoluan A., Khantachawana A., Kaewtatip P., Dechkunakorn S., Anuwongnukroh N., Santiwong P., Kajornchaiyakul J.

ผู้เผยแพร่: Trans Tech Publications

ปีที่เผยแพร่ (ค.ศ.): 2011

Volume number: 87

หน้าแรก: 95

หน้าสุดท้าย: 100

จำนวนหน้า: 6

ISBN: 9783037852309

นอก: 1660-9336

eISSN: 1662-7482

URL: https://www.scopus.com/inward/record.uri?eid=2-s2.0-80052951319&doi=10.4028%2fwww.scientific.net%2fAMM.87.95&partnerID=40&md5=5adf33db2fbc31c92571d3eb02113267

ภาษา: English-Great Britain (EN-GB)

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บทคัดย่อ

This study aims to investigate mechanical properties and transformation behavior of TiNiCu shape memory alloys to obtain optimal conditions for utilizing as orthodontic wires. TiNi binary alloys with Ni-content 50.6 at.%, TiNiCu alloys with Cu-content ranging from 5 to 10 at.%, were prepared. The alloys were melted by electrical arc-melting method and then homogenized at, 800ฐC for 3600 s. The alloys were subsequently sliced into thin plates (1.5 mm) by EDM wire cutting machine. To evaluate mechanical properties, the specimens were cold-rolled with 10, 20 and, 30%, followed by heat treatment at 400ฐC and 600ฐC for 3600 s, respectively. A Differential Scanning Calorimeter (DSC) was used to detect transformation temperatures. Mechanical properties were evaluated by micro hardness and three-point bending tests. The results showed that transformation temperatures were strongly increased with increasing Ni-content. Moreover, the decrease in transformation temperature after increasing level of cold-rolling reduction ratio suggests that internal stress can depress transformation. However, internal stress seemed to support the introduction of superelasticity for each specimen. In addition, specimens heat treated at 400ฐC have more appropriate properties as orthodontic wires than those heat-treated at 600ฐC due to the remaining effect of cold-working. These results can be take into consideration for optimizing alloy composition and mechanical properties of TiNiCu shape memory alloys for orthodontics wires purposes. ฉ (2011) Trans Tech Publications.

คำสำคัญ

Cu addition, Orthodontics wire, TiNi