VI Bration Induced Microstructure of Nano/Micro Phase and Its Mechanical Properties

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Project title

Code/計畫編號

NSC101-2221-E019-033

Translated Name/計畫中文名

振動誘發微奈米晶之微觀結構與機械特性

Project Coordinator/計畫主持人

Shing-Hoa Wang

Funding Organization/主管機關

National Science and Technology Council

Department/Unit

Department of Mechanical and Mechatronic Engineering

Website

https://www.grb.gov.tw/search/planDetail?id=2598481

Year

2012

Start date/計畫起

01-08-2012

Expected Completion/計畫迄

01-07-2013

Bugetid/研究經費

985千元

ResearchField/研究領域

材料科技

"微奈米晶相之微觀結構組織，通常是以熱力學合金固化或再結合熱處理析出製程完成，奈米顆粒添加複合相製程完成，或利用極度塑性加工變形Continuous Equal-Channel Angular Process，再施以加熱的熱機處理製程完成奈米晶。本研究利用簡單電弧結合活性劑輔助熔融熔深方式，研究機械振動對微奈米晶相形成之機制及其機械特性。本研究將以3 年的時間完成，機械振動誘發微奈米晶相於雙相鈦合金之效應及機械特性。第1 年：先組裝機械振動及訊號量測校正後，並探討活性劑輔助振動誘發之微奈米晶相微觀結構及其機械特性。第2 年：微量奈米鑽石添加活性劑之機械振動誘發微奈米晶相微觀結構之影響及其機械特性。第3 年：真空無氧環境下鑽石添加於鹵鹼族化合物活性劑之機械振動誘發微奈米晶相結構，探討殘餘氧對微奈米晶之效應及其機械特性。新世代先進結構材料，日本 SP700 新超塑性雙相鈦合金，及一般的Ti-6Al-4V 雙相鈦合金，將作為此主題之實驗用材料。本計畫同時與日本國立National Institute for Material Science 研究院合作，從事In-situ 相變態及miniature size 的electro thermal mechanical fatigue 機械特性分析及微奈米相之熱穩定性探討。期盼本計畫3 年後，開發出新微奈米晶結構組織之製備方法，及具有優越機械性質之新結構材料，為新世代結構材料拓展奠定一個良好的應用基礎。" "In general, the microstructure of micro/nano phase produced by thermodynamic solidification or recombined with heat treatment process, composite synthesis with nano-sized particle addition or excessive deformation through Continuous Equal-Channel Angular Process. The purpose of this study is to develop a technique and the theory by arc melting coupled to both active flux and mechanical vibration to produce a deep fusion zone with the microstructure of full micro/nano phase. Composite of micro/nano microstructure induced by vibration is in pursuit of its mechanism and its mechanical properties within a period of three years. The first year, the vibration system will be built up and complete the mechanism and mechanical properties study of micro/nano phase alloy. The second year, a small amount of nano diamond addition of active flux will utilize to study the heterogeneous nucleation on the formation of micro/nano phase alloy and the mechanical properties. The third year, the effect of residual oxygen on nucleation of micro/nano phase will be investigated under a vacuum glove box with a dehumidified purging system. The duplex titanium of Ti-6Al-4V and Japan patented SP700 choose for this experimental alloy. In the meantime, this collaborative project with National Institute for Materials Science, Japan includes the real-time phase transformation and thermal fatigue in miniature specimen for the study of micro/nano phase stability and mechanical properties. After three years of intensive research, it expects that a better picture on the micro/nano phase alloy can provide a novel superior mechanical strength and toughness materials."

Keyword(s)

微奈米晶相
振動
相變態
疲勞
Micro/nano phase
vibration
phase transformation
fatigue

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VI Bration Induced Microstructure of Nano/Micro Phase and Its Mechanical Properties

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