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Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 = = A ...

陳耀庭

Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 = = A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy /

Record Type:	Language materials, printed : Monograph/item
Title/Author:	Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 =/ 陳耀庭.
Reminder of title:	A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy /
remainder title:	A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy.
Author:	陳耀庭
Published:	雲林縣 :國立虎尾科技大學 , : 民113.07.,
Description:	[8], 94面 :圖, 表 ; : 30公分.;
Notes:	指導教授: 楊崇煒.
Subject:	鋅銅合金. -
Online resource:	電子資源

Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 = = A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy /
陳耀庭

Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 =A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy /A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy.陳耀庭. - 初版. - 雲林縣 :國立虎尾科技大學 ,民113.07. - [8], 94面 :圖, 表 ;30公分.

指導教授: 楊崇煒.

碩士論文--國立虎尾科技大學材料科學與工程系材料科學與綠色能源工程碩士班.

含參考書目.

本研究利用高週波熔煉爐進行熔煉製備Zn-xCu合金(x = 1、2、3 wt.%)鑄錠，觀察並分析不同銅含量之Zn-xCu合金鑄錠經過400ºC均質化熱處理及摩擦攪拌製程(friction stir processing, FSP)改質處理後之微觀組織的變化及特徵，並加以探討Zn-xCu合金之拉伸機械性質的變化及斷裂特徵。實驗結果顯示隨著銅含量的提升，Zn-xCu合金之平均硬度值、抗拉強度及延展性也都隨之提升，且在銅含量為2 wt.%以上時，組織間能夠觀察到CuZn5化合物在晶界處析出，且比例會隨著銅含量上升而增加。均質化熱處理可以改善鑄造材的元素分布，使銅更均勻的分散在Zn-xCu合金當中，以及增加材料之平均晶粒徑，並且部分CuZn5化合物被固溶進基相當中，在組織中比例變少而導致平均硬度值下降。根據拉伸試驗的結果來看，Zn-xCu合金之抗拉強度及延展性也都跟著降低，表示CuZn5化合物對於提升延展性及抗拉強度具有助益。Zn-xCu合金鑄錠在經過摩擦攪拌改質後，將具有偏析及第二相析出物之鑄造組織變為均勻混合的組織，因此降低Zn-xCu合金的平均硬度值，而經過均質化熱處理後再進行摩擦攪拌改質之Zn-xCu合金，會得到相比於只進行摩擦攪拌改質更加均勻細化的組織，因此平均硬度質得到提高。根據拉伸試驗結果及斷面觀察結果顯示，經過摩擦攪拌改質之Zn-xCu合金之抗拉強度會得到提升，且銅含量為1 wt.%之Zn-xCu合金延展性會變好；而銅含量2 wt.%以上之Zn-xCu合金經過摩擦攪拌，延展性會略微降低，且沿TD方向拉伸之試片，容易在攪拌前進端(AS)之熱機影響區(TMAZ)發生劈裂破壞。.

(平裝)Subjects--Topical Terms:

1420528
鋅銅合金.

Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 = = A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy /
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245 1 0 $a Zn-xCu合金經摩擦攪拌改質之微觀組織解析及拉伸性質探討 = $b A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy / $c 陳耀庭.
246 1 1 $a A Study of Microstructural Features and Tensile Mechanical Properties of Friction Stir Processed Zn-xCu Alloy.
250 $a 初版.
260 # $a 雲林縣 : $b 國立虎尾科技大學 , $c 民113.07.
300 $a [8], 94面 : $b 圖, 表 ; $c 30公分.
500 $a 指導教授: 楊崇煒.
500 $a 學年度: 112.
502 $a 碩士論文--國立虎尾科技大學材料科學與工程系材料科學與綠色能源工程碩士班.
504 $a 含參考書目.
520 3 $a 本研究利用高週波熔煉爐進行熔煉製備Zn-xCu合金(x = 1、2、3 wt.%)鑄錠，觀察並分析不同銅含量之Zn-xCu合金鑄錠經過400ºC均質化熱處理及摩擦攪拌製程(friction stir processing, FSP)改質處理後之微觀組織的變化及特徵，並加以探討Zn-xCu合金之拉伸機械性質的變化及斷裂特徵。實驗結果顯示隨著銅含量的提升，Zn-xCu合金之平均硬度值、抗拉強度及延展性也都隨之提升，且在銅含量為2 wt.%以上時，組織間能夠觀察到CuZn5化合物在晶界處析出，且比例會隨著銅含量上升而增加。均質化熱處理可以改善鑄造材的元素分布，使銅更均勻的分散在Zn-xCu合金當中，以及增加材料之平均晶粒徑，並且部分CuZn5化合物被固溶進基相當中，在組織中比例變少而導致平均硬度值下降。根據拉伸試驗的結果來看，Zn-xCu合金之抗拉強度及延展性也都跟著降低，表示CuZn5化合物對於提升延展性及抗拉強度具有助益。Zn-xCu合金鑄錠在經過摩擦攪拌改質後，將具有偏析及第二相析出物之鑄造組織變為均勻混合的組織，因此降低Zn-xCu合金的平均硬度值，而經過均質化熱處理後再進行摩擦攪拌改質之Zn-xCu合金，會得到相比於只進行摩擦攪拌改質更加均勻細化的組織，因此平均硬度質得到提高。根據拉伸試驗結果及斷面觀察結果顯示，經過摩擦攪拌改質之Zn-xCu合金之抗拉強度會得到提升，且銅含量為1 wt.%之Zn-xCu合金延展性會變好；而銅含量2 wt.%以上之Zn-xCu合金經過摩擦攪拌，延展性會略微降低，且沿TD方向拉伸之試片，容易在攪拌前進端(AS)之熱機影響區(TMAZ)發生劈裂破壞。.
520 3 $a This study utilized a high-frequency induction melting furnace to melt and prepare Zn-xCu alloys (x = 1, 2, and 3 wt.%) for casting ingots. The ingots of these alloys were then subjected to 400°C homogenization heat treatment and friction stir processing (FSP) to observe and analyze changes and characteristics in the microstructure. The study also investigated variations in tensile mechanical properties and fracture characteristics of the Zn-xCu alloys. Experimental results showed that with increasing Cu content, the average hardness, tensile strength, and ductility of the Zn-xCu alloys improved. For Cu content exceeding 2 wt.%, CuZn5 compounds precipitated at grain boundaries, and their proportion increased with higher Cu content. Homogenization heat treatment improved the elemental distribution in the cast material, promoting more uniform dispersion of Cu within the Zn-xCu alloy and increasing the average grain size. Some CuZn5 compounds were dissolved into the matrix, reducing their proportion in the microstructure and thereby lowering the average hardness.Tensile testing results indicated a decrease in tensile strength and ductility with increasing CuZn5 content, although these compounds contributed positively to ductility and tensile strength. Friction stir processing transformed the segregated and second-phase precipitated structure of the cast Zn-xCu alloys into a more homogeneously mixed microstructure, resulting in decreased average hardness. When followed by homogenization heat treatment, Zn-xCu alloys processed through FSP exhibited a more uniform and refined microstructure, leading to improved average hardness. According to the results of tensile tests and fracture surface observations, Zn-xCu alloys processed by friction stir processing showed enhanced tensile strength, with improved ductility observed in alloys containing 1 wt.% Cu. However, alloys with Cu content exceeding 2 wt.% showed a slight decrease in ductility after friction stir processing, and specimens stretched along the transverse direction TD were susceptible to cleavage fracture within the thermo-mechanical affected zone (TMAZ) adjacent to the advancing side (AS)..
563 $a (平裝)
650 # 4 $a 鋅銅合金. $3 1420528
650 # 7 $a 熱處理. $2 lcstt $3 832856
650 # 4 $a 摩擦攪拌改質製程. $3 1450206
650 # 4 $a 拉伸試驗. $3 1150792
650 # 4 $a 斷裂機構. $3 1420536
650 # 4 $a 織構. $3 999591
650 # 4 $a Zn-Cu alloy. $3 1450207
650 # 4 $a heat treatment. $3 1049710
650 # 4 $a friction stir process. $3 1420538
650 # 4 $a tensile tests. $3 1420539
650 # 4 $a fracture mechanism. $3 1420540
650 # 4 $a texture. $3 1085089
856 7 # $u https://handle.ncl.edu.tw/11296/j529t3 $z 電子資源 $2 http