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鍛(duan)造異常的(de)LTHE和充氫條件(jian)的(de)關系

文章來源:sjzwx 更新(xin)時間(jian):2014-02-19 11:04:59

 異(yi)常(chang)的(de)(de)(de)LTHE和充(chong)氫(qing)(qing)(qing)(qing)(qing)條件的(de)(de)(de)關(guan)系電流(liu)密度(du)(du)(du)為25A/m’時(shi)(shi),延(yan)伸率(lv)(lv)與(yu)充(chong)氫(qing)(qing)(qing)(qing)(qing)時(shi)(shi)間(jian)(jian)(jian)的(de)(de)(de)關(guan)系如(ru)圖(tu)9所示(shi),即使經過86.4ks(24h)充(chong)氫(qing)(qing)(qing)(qing)(qing)處理(li)后,未放化(hua)(hua)試(shi)(shi)樣(yang)的(de)(de)(de)延(yan)伸率(lv)(lv)也幾(ji)乎沒(mei)有(you)明(ming)(ming)顯(xian)(xian)降低。而敏(min)(min)化(hua)(hua)試(shi)(shi)樣(yang)僅(jin)經240s(4min)的(de)(de)(de)充(chong)氫(qing)(qing)(qing)(qing)(qing),就呈(cheng)現(xian)了(le)(le)異(yi)常(chang)LTH$的(de)(de)(de)明(ming)(ming)顯(xian)(xian)跡象,繼(ji)續延(yan)長充(chong)氫(qing)(qing)(qing)(qing)(qing)時(shi)(shi)間(jian)(jian)(jian)還可(ke)看(kan)到(dao)延(yan)伸率(lv)(lv)的(de)(de)(de)進(jin)一(yi)(yi)步明(ming)(ming)顯(xian)(xian)下降。敏(min)(min)化(hua)(hua)與(yu)未敏(min)(min)化(hua)(hua)試(shi)(shi)樣(yang)實際吸(xi)收氫(qing)(qing)(qing)(qing)(qing)量與(yu)充(chong)氫(qing)(qing)(qing)(qing)(qing)時(shi)(shi)間(jian)(jian)(jian)的(de)(de)(de)關(guan)系如(ru)圖(tu)10,吸(xi)收氫(qing)(qing)(qing)(qing)(qing)的(de)(de)(de)數量用323K(5o`c)x360k,〔丁(ding)(ding)00h)加(jia)熱時(shi)(shi)氫(qing)(qing)(qing)(qing)(qing)的(de)(de)(de)析出(chu)量表示(shi).是采用氣相色潛儀酌一(yi)(yi)定(ding)的(de)(de)(de)。一(yi)(yi)些試(shi)(shi)樣(yang)試(shi)(shi)P.性地(di)連續處理(li)達丁(ding)(ding),8呱(e0業),但超(chao)過35Gks(1'('h)氫(qing)(qing)(qing)(qing)(qing)的(de)(de)(de)i荊一(yi)(yi)加(jia)析出(chu)暈不(bu)超(chao)過氫(qing)(qing)(qing)(qing)(qing)析出(chu)總量的(de)(de)(de)I%。如(ru)ft110所示(shi),隨充(chong)氫(qing)(qing)(qing)(qing)(qing)過程的(de)(de)(de)延(yan)長.氫(qing)(qing)(qing)(qing)(qing)析UMa4加(jia),fit其數值a}顯(xian)(xian)的(de)(de)(de)分散。值意是,在(zai)敏(min)(min)化(hua)(hua)與(yu)未敏(min)(min)化(hua)(hua)試(shi)(shi)樣(yang)之間(jian)(jian)(jian),可(ke)著到(dao)氫(qing)(qing)(qing)(qing)(qing)析出(chu)量無明(ming)(ming)淤不(bu)同(tong)二(er)這一(yi)(yi)現(xian)象表明(ming)(ming),那(nei)些對異(yi)常(chang)LTHE敏(min)(min)感約i式(shi)樣(yang)(僅(jin)在(zai)敏(min)(min)化(hua)(hua)試(shi)(shi)樣(yang)中觀察(cha)到(dao)),不(bu)以較高含氫(qing)(qing)(qing)(qing)(qing)VAI標志。充(chong)氫(qing)(qing)(qing)(qing)(qing)過程持續時(shi)(shi)間(jian)(jian)(jian)為86.4ks24h)保持不(bu)變(bian),其電流(liu)密度(du)(du)(du)的(de)(de)(de)變(bian)化(hua)(hua)對塑性影響如(ru)圖(tu)n所示(shi)。在(zai)電演密度(du)(du)(du)為60A廠mZ充(chong)氫(qing)(qing)(qing)(qing)(qing)時(shi)(shi),看(kan)到(dao)了(le)(le)異(yi)常(chang)的(de)(de)(de)LTHE,而電流(liu)密度(du)(du)(du)進(jin)一(yi)(yi)步增加(jia),LTHE并不(bu)明(ming)(ming)顯(xian)(xian)加(jia)重.

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