鐵-4鎳-2鉬-1銅-X鉻合金機械性質分析

The Analysis of Mechanical Property on the Fe-4Ni-2Mo- 1Cu-XCr Alloys

翁正昇(Weng Zheng-Sheng)

指導教授 ： 趙志燁

國立屏東科技大學/工學院/機械工程系所/碩士(2018年)

https://doi.org/10.6346/THE.NPUST.ME.016.2018.E06

摘要

論文摘要內容：
本研究主要設計鐵-4鎳-2鉬-1銅-X鉻合金，X=12.5~15.5，分析不同鉻元素含量對機械性質之影響。主要研究結果如下：
1. 鐵-(3.24~4.15)鎳-(2.22~2.41)鉬-(1.08~1.24)銅-X鉻合金，其間X介於12.76~15.70重量百分比，其基本顯微結構為麻田散鐵相組織結構。根據XRD數據，時效後可觀察到體心立方組織結構(富銅相)。
2. 合金鑄件機械性質：原料之抗拉強度介於為84~115ksi，降伏強度為75~105ksi，延伸率0.8~1.5%，隨鉻當量上升而下降。
3. 鑄件經過1040℃/1小時高溫處理，接著-73℃/8小時深冷處理，在經465℃/4小時時效處理後，其抗拉強度介於221~239ksi，降伏強度介於179~198ksi，延伸率則介於5.5~15.3%；於480℃/4小時時效處理，則其抗拉強度介於為220~231ksi，降伏強度介於180~198ksi，延伸率介於8.4~15.3%。
4. 其間，鉻元素含量小於14.5 (X=12.76~14.10)，其強度可大於235ksi，合金的機械性質優於目前商用鑄造型高爾夫球鐵桿頭材料，且具有大氣抗腐蝕性，具有應用於高爾夫球頭之潛力。

關鍵字

不銹鋼 ； 機械性質 ； 鉻含量 ； 延伸率

並列摘要

The Contents of Abstract in this Thesis:
The purposes of present studies are to design these Fe-4Ni-2Mo- 1Cu-xCr alloys, of which x=12.5~16.0. And, the effects of various Cr contents on mechanical properties of the present alloys are also performed. The main results are described as following:
1. The microstructure of these Fe-(3.24~4.15)Ni-(2.22~2.41)Mo-(1.08~ 1.24)Cu-XCr alloys are essentially martensite phase, of which X= 12.76~15.70 mass%. Based on XRD data, after being aging processes, another BCC-structure phase occurred on the aged specimen.
2. The UTS, YS, and elongations of as-cast alloys are in the range of 84~115ksi, 75~105ksi and 0.8~1.5%, respectively. And the UTS strength decreased as Cr contents increased.
3. Being heated at 1040℃/1hr, subzero treatment at -73℃/8hr, and then aging treatment at 465℃/4hr, the UTS, YS, and elongations of these alloys are in the range of 220~239ksi, 179~198ksi and 4.8~15.3%, respectively. Increased aging temperature to 480℃/4hr, the UTS, YS, and elongations of the alloys are in the range of 220~231ksi, 180~198ksi and 8.4~15.3%,
4. Compared with commercial Golf-Head materials, the present alloys with the Cr=12.76~14.10 wt% could possess the mechanical strength higher than 235ksi and have a potential on Golf-Head Club.

並列關鍵字

stainless steel ； mechanical property ； Cr content ； elongation

參考文獻

[1] 許勝安，2014，「高爾夫球頭材質探究」，碩士論文，國立屏東科技大學，屏東。

[2] 郭癸賓、趙志燁、何維華，「高爾夫桿頭合金材料機械性質之探討」，國立屏東科技大學、臺北市立大學運動器材科技研究所，華人運動生物力學期刊，第11期，第34-40頁，2014年10月。

[3] 謝佩娟，2014，「密度7.5g/cm³鐵基不銹鋼高爾夫球頭材質開發」，碩士論文，屏東科技大學，屏東。

[4] 陳瑞凱、詹益愷，「不鏽鋼種類與材質磁性的關係」，國立清華大學奈微與材料科技中心、國立清華大學材料科學工程學系。

[5] Wang, J., Zou, H., Li, C., Peng, Y., Qiu, S. and Shen, B., “The microstructure evolution of type 17-4PH stainless steel during long-term aging at 350℃," Retrieved from： http://www.sciencedirect.com., 2006.