Please use this identifier to cite or link to this item: http://hdl.handle.net/11455/9536
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dc.contributor.advisor吳威德zh_TW
dc.contributor.advisorWeite Wuen_US
dc.contributor.author謝媛晰zh_TW
dc.contributor.authorHSI, HSIEH YUENen_US
dc.date2005zh_TW
dc.date.accessioned2014-06-06T06:43:25Z-
dc.date.available2014-06-06T06:43:25Z-
dc.identifier.urihttp://hdl.handle.net/11455/9536-
dc.description.abstract摘要 鎳鋁介金屬化合物具有高強度、高硬度、質量輕、耐氧化、耐腐蝕及低磨耗係數等特點,因此為當前最具潛力的材料之一。若能以硬面處理的方式將鎳鋁介金屬被覆於物體表面,不但可提高工件使用壽命、節省製造維修費用外、還可減少修理和更換磨損工件的時間。 本文以鎢極電弧惰性遮護硬面銲覆的方式,將不同鎳鋁合金配比之銲料,銲覆於S45C中碳鋼基材上。藉由金相組織分析、硬度測量及X 光繞射等方法分析銲覆層組織,並進行乾砂磨耗、環對盤磨耗試驗,評估不同鎳鋁合金配比之銲覆層的抗磨耗性能,再利用掃描式電子顯微鏡觀察磨耗表面。 實驗結果發現有橫越並貫穿銲覆層的巨觀裂縫;而熱影響區都是沿著晶界龜裂的現象產生,而此情形會因為鎳含量的增加而趨於緩和。不同鎳鋁合金配比之銲覆層組織為常見的銲後樹枝狀晶組織,銲覆層結構經XRD分析,主要為β-NiAl相、β-AlFe相、α´-Ni3Al相、δ-ferrite,當鎳鋁比增加到2:1時出現了少量的α´-Ni3Al相,而隨著鎳含量的增加,銲覆層產生α´-Ni3Al的相也就隨之增加。 經由銲覆後表面硬度值皆有提升的現象,而由原本的β-NiAl相,隨著鎳含量的增加而讓β-NiAl相的基地中產生穩定的α´-Ni3Al相,使得剛好藉由α´-Ni3Al相來強化NiAl相晶界而改善NiAl室溫延展性不佳的問題,故使得延展性增加而硬度值降低。zh_TW
dc.description.abstractAbstract Ni-Al intermetallic compound (IMC) has excellent characteristics such as high strength, high hardness, light weight, anti oxidation, anti corrosion and low wear coefficient. It's one of the materials with high potential. If Ni-Al intermetallic compounds were coated on the surface of an object by using hardfacing treatment, it can not only extend life of specimen but also reduce the time for service and component replacing. The study taking advantage of GTAW to weld on S45C steel with five Ni-Al specific composition powder filler. In order to inverstage the properity of the hardfacing layer, microstructure was observed by an optical and scanning electron microscope. For phase identify X-ray diffraction technique was used. At last, sand abrasion and ring on disc abrasion was done for knowing the difference type abrasion resistance. The result shows that macro crack cross through the hardfacing layer. In heat affect zone were intergranular cracks. The crack will be reduced with the increase of nickel addition. The most microstructure of the hardfacing is dendrite structure. The coating surfaces of different Al and Ni ratio have β-NiAl, β-AlFe, α´-Ni3Al and δ-ferrite phases were discovered by XRD analysis. As the ratio of Al-Ni increases up to 1:2, it contains few amounts of α´-Ni3Al phase. With the increasing of nickel addition, the α´-Ni3Al phase also increased. By the mechanical property test, the surface hardness will increased by using after hardfacing treatment. As nickel increasing, the α´-Ni3Al will appear in the β-NiAl matrix. The α´-Ni3Al will strengthen the grain boundary of NiAl to improve ductility at room temperature.en_US
dc.description.tableofcontents表目錄 表2-1:銲接龜裂發生之主要原因.…………………………………...19 表2-2:高溫龜裂之分類..………….…………………………………21 表2-3:常見的介金屬化合物的物理性質.……..….……………..……35 表2-4:介金屬化合物應用實例………………………………………..35 表3-1:S45C之元素成分(wt%)…………..…………………………….47 表3-2:各組不同鎳鋁粉末之配比……….…..………..……………….47 表3-3:銲接參數……………………………….………..……………...48 表3-4: SKD61工具鋼之元素成分(wt%)……………………………...53 表4-1(a):鎳鋁配比為1:1之WDX成分分析結果.……..…...…..………74 表4-1(b):鎳鋁配比為2:1之WDX成分分析結果………………............74 表4-1(c):鎳鋁配比為3:1之WDX成分分析結果………..….….………75 表4-1(d):鎳鋁配比為4:1之WDX成分分析結果………....……………75 表4-1(e):鎳鋁配比為5:1之WDX成分分析結果…………………….76 圖目錄 圖2-1:鎢極惰氣遮護電弧銲基本設備與電弧產生的原理示圖…….…6 圖2-2:產生固溶與析出反應的合金系統圖………………………...…11 圖2-3:時效硬化合金熱處理過程顯微組織的變化圖……………...…11 圖2-4:熔融金屬的凝固過程圖………..……..………………………...13 圖2-5:高銲速時,圓柱形晶之成長方向圖………………………….…14 圖2-6:熱量輸入與銲件性質的關係圖…………………………...……16 圖2-7:類值同形之二元相圖的一部份圖…...……………………...….16 圖2-8:在距離(x)內,合金溫度小於其凝固點,此稱為組成過冷……..17 圖2-9:組成過冷之結構組織………..………….…….…………..…….17 圖2-10:金屬於高溫中之延性和脆性之關係………………………….21 圖2-11:SUS 310S之凝固龜裂的顯微組織…………..…………...…...22 圖2-12:凝固龜裂產生機構……………………..…………...…………23 圖2-13:主要銲接龜裂示意圖………………………………………….25 圖2-14:再熱龜裂示意圖………………………..……………………...27 圖2-15:再熱龜裂要因圖……………………………………………….27 圖2-16:三類介金屬化合物圖…..……..……..………………………...34 圖2-17:Ni-Al系統相圖..……………………………………………….36 圖2-18:NiAl結構圖………………………..…………………………...36 圖2-19:NiAl 晶格常數與密度對鎳原子比例之關係圖...…...……….37 圖2-20:Ni3Al結構圖..………………………...…………………...……38 圖2-21:著名的熱硬化機構圖..………..…………...…….…………….38 圖2-22:鎳鋁介金屬化合物的熱硬化特性..…………………………...39 圖2-23:FeAl結構圖..………..………..………………………………...39 圖2-24:黏著磨耗示意圖……..…………………….…...……………..43 圖2-25:在兩粗糙面上的凹凸處最初可能有鍵結,需足夠的力才能打斷鍵結及使表面相對滑動。在它們滑動之時,凹凸處可能被破壞,使表面磨損及產生磨屑..……………………..……..……………………43 圖2-26:微切削造成切削屑的磨屑圖………………………………….44 圖2-27:片狀磨屑圖..………………………………………...................44 圖2-28:不論是以固著式或以自由移動式磨料造成的磨料磨耗,皆會在材料表面形成凹槽及凸起,而後者將破碎成磨屑..………………..45 圖3-1:實驗流程…………………………………..……..……………...46 圖3-2:實驗設備示意圖…..…………………………………………….48 圖3-3:乾砂式磨耗示意圖…………………………………………........51 圖3-4:乾砂式磨耗試驗機...…...………………………………………..52 圖3-5:環在盤上的滑移磨耗試驗機示意圖……………………...……54 圖3-6:盤與環尺寸示意圖………..………….…...…….………………55 圖4-1:Al-Fe-Ni 三相平衡相圖….…………………………………….57 圖4-2:為五組不同配比之鎳鋁金屬銲料之X光繞射分析結果之疊圖.58 圖4-3:試片編號A(Ni:Al重量比為1:1)之銲覆層有極嚴重的橫向龜裂發生…………………………..….………………………………….…..60 圖4-4:銲覆層截面組織觀察取樣圖,A區為銲覆頂層,B 區為稀釋區…………………...…...........................................................................60 圖4-5:龜裂是從母材張開,並以垂直銲道方向向銲覆層延伸……….61 圖4-6:在熱影響區的部份,利用SEM觀察有沿晶龜裂的現象……....61 圖4-7(a):鎳鋁比為1:1之銲覆層顯微組織…………….........................64 圖4-7(b):鎳鋁比為2:1之銲覆層顯微組織………..…………………...64 圖4-7(c):鎳鋁比為3:1之銲覆層顯微組織…………….........................65 圖4-7(d):鎳鋁比為4:1之銲覆層顯微組織………..…………………..65 圖4-7(e):鎳鋁比為5:1之銲覆層顯微組織…………….........................66 圖4-8(a):鎳鋁配比為1:1之BEI圖。…………………………………70 圖4-8(b):鎳鋁配比為2:1之BEI圖。…………………………………70 圖4-8(c):鎳鋁配比為3:1之BEI圖。…………………………………71 圖4-8(d):鎳鋁配比為4:1之BEI圖。…………………………………71 圖4-8(e):鎳鋁配比為5:1之BEI圖。…………………………………72 圖4-9:鎳鋁配比為1:1之A組針對Fe、Al、Ni三元素之Mapping圖………………………………………………………………………..73 圖4-10:不同鎳鋁配比之銲料銲覆於銲覆層之硬度值的變化曲線…78 圖4-11:銲件硬度值分佈以跨越銲道、HAZ及母材三區域…………78 圖4-12:不同合金配比之乾砂磨耗試驗磨耗量………………………81 圖4-13:硬度與磨耗量之關係圖………………………………………81 圖4-14(a):鎳鋁比為1:1之SEM磨耗面………………………………82 圖4-14(b):鎳鋁比為2:1之SEM磨耗面………………………………82 圖4-14(c):鎳鋁比為3:1之SEM磨耗面………………………………83 圖4-14(d):鎳鋁比為4:1之SEM磨耗面………………….………….83 圖4-14(e):鎳鋁比為5:1之SEM磨耗面………………………………83 圖4-15:不同鎳旅配比之黏著磨耗試驗………………………………84 圖4-16:不同鎳鋁配比黏著磨耗試驗之磨耗率………………………86 圖4-17(a):鎳鋁比為1:1之SEM磨耗面………………………………87 圖4-17(b):鎳鋁比為2:1之SEM磨耗面………………………………87 圖4-17(c):鎳鋁比為3:1之SEM磨耗面………………………………88 圖4-17(d):鎳鋁比為4:1之SEM磨耗面………………………………88 圖4-17(e):鎳鋁比為5:1之SEM磨耗面………………………………89zh_TW
dc.language.isoen_USzh_TW
dc.publisher材料工程學研究所zh_TW
dc.subjectHardfacingen_US
dc.subject硬面銲覆zh_TW
dc.subjectNickel Aluminum Intermetallic Compounden_US
dc.subjectGTAWen_US
dc.subject鎳鋁介金屬化合物zh_TW
dc.subject鎢極電弧惰性遮護zh_TW
dc.title鎳鋁介金屬化合物硬面銲覆性質之研究zh_TW
dc.titleThe Study of Hardfacing Properity of Nickel Aluminum Intermetallic Compounden_US
dc.typeThesis and Dissertationzh_TW
item.languageiso639-1en_US-
item.openairetypeThesis and Dissertation-
item.cerifentitytypePublications-
item.grantfulltextnone-
item.fulltextno fulltext-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
Appears in Collections:材料科學與工程學系
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