? 發問時間: 社會與文化語言 · 1 0 年前

環境工程英文論文翻譯

As the burnup proceeds, an oxide and subsequent hydrogen caused by a waterside corrosion are generated in the cladding, which decreases the initial ductility of the cladding [1]. Such oxide and hydrogen act as a negative effect on the cladding safety because the embrittled cladding can lose its ductility and it lowers the margin for a cladding design [2].

The objectives in this study are to investigate the effects of

absorbed hydrogen on the circumferential mechanical behaviors

of a newly developed zirconium alloy cladding. Hydrogen was

charged into Zircaloy-4 and zirconium alloy cladding developed

by the Korea Atomic Energy Research Institute (KAERI) [3].

Ring tension test and burst test were conducted on the hydrogencharged

cladding and the circumferential mechanical properties

such as the strength and fracture strain were evaluated.

2.1. Material preparation

Claddings used in this study are the zirconium alloy cladding developed

by KAERI. HANA-4 (Zr–1.5Nb–0.4Sn–0.2Fe–0.1Cr) and HANA-6

(Zr–1.1Nb–0.05Cu) cladding were used. Commercial grade low tin Zircaloy-4(Zr–1.3Sn–0.21Fe–0.1Cr) was also used in this study for a comparison. All the zirconium claddings contained 1200 ppm of dissolved oxygen. The claddings were finally heat treated at 470 ◦C for 2.5 h to have a stress-relieved microstructure,which is known to bear a good corrosion resistance [4]. The outer diameter and the thickness of the cladding were respectively 9.5mm and 570m. To simulate the effect of hydrogen, the cladding was cut into the desired length and charged by the Sievert method at a level up to 700 ppm. As the absorbed hydrogen contents can be varied in spite of the same charging conditions, all of the specimens were analyzed for their hydrogen content then averaged after the

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2 個解答

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  • 1 0 年前
    最佳解答

    因為burnup 進行,水邊引起腐蝕的氧化物和隨后的氫被在cladding裡產生,這減少cladding的最初延展性 [1]. 這樣的氧化物和氫作為對cladding 安全的負影響, 使脆化的cladding 能丟失它延展性並且它降低給cladding的空白邊設計 [2].

    在這項研究過程中的目標是調查影響

    關於circumferential 機械行為吸收氫

    一新近發展的鋯合金cladding。 氫是

    進入鋯合金-4 和cladding 發展的鋯合金

    由朝鮮原子能研究院(KAERI) [3].

    戒指緊張試驗和破壞試驗被實施在hydrogencharged

    cladding和circumferential 機械特性

    例如力量和裂縫勞累被評價。

    2.1.物質準備

    在這項研究過程中使用的Claddings是cladding 發展的鋯合金

    透過KAERI。 HANA-4(Zr V1.5Nb V0.4Sn V0.2Fe V0.1Cr)和HANA-6

    (Zr V1.1Nb V0.05Cu)cladding被使用。 商業的等級低的罐鋯合金-4(Zr V1.3Sn V0.21Fe V0.1Cr)也被為一種比較在這項研究過程中使用。 全部鋯claddings 包含溶解的氧的1200 ppm。 claddings 最後被在470進行熱處理嗎? 有應力消失微視架構的2.5 h的C,承擔好耐腐蝕性,眾所周知 [4]. 外徑和cladding的濃度分別是類比氫的影響的9.5毫米和570米, cladding被切開被要求的長度並且在700 ppm的層被Sievert 方法收費。 儘管收費條件的相同,作為被吸收的氫含量可以被改變, 所有樣品分析,因為然後他們的氫內容平均在之后

  • 9 年前

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