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MIM工藝對(duì)W—Ni—Fe高密度合金力學(xué)性能的影響
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TF125.241

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國(guó)家863高技術(shù)計(jì)劃資助,國(guó)家教委“跨世紀(jì)優(yōu)秀人才計(jì)劃”基金


Effect of MIM Processing on the MechanicalProperties of TungstenNickelIron Heavy Alloy
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    摘要:

    研究了粉末裝載量和燒結(jié)溫度對(duì)ＭＩＭ鎢基高密度合金力學(xué)性能的影響，并將ＭＩＭ工藝與傳統(tǒng)壓制／燒結(jié)工藝進(jìn)行了比較，實(shí)驗(yàn)結(jié)果表明，采用裝載量為４７％（體積分?jǐn)?shù)）的喂料，在１５３０℃燒結(jié)２ｈ得到的９７Ｗ－２Ｎｉ－１Ｆｅ高密度合金具有優(yōu)良的力學(xué)性能的達(dá)到的性能為σｂ＝９３６ＭＰａ，σ０．２＝６４９ＭＰａ，δ＝１１．４％，ＨＲＣ＝３１，優(yōu)于傳統(tǒng)壓制／燒結(jié)工藝制得的合金。

    Abstract:

    The effects of powder loading and sintering temperature on the mechanical properties of a metal injection molded (MIM) tungsten heavy alloy are studied. The properties of MIM products are compared with those of traditional pressed/sintered products with the same compositions. The following optimal properties have been attained for the 97W 2Ni 1Fe alloy made by the MIM process with a powder loading of 47vol% and sintered at 1 530 for 2 hrs: b=936 MPa,02=649 MPa,=114%,HRC=31 They are much better than those of pressed/sintered alloy.

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曲選輝 毛金英. MIM工藝對(duì)W—Ni—Fe高密度合金力學(xué)性能的影響[J].稀有金屬材料與工程,1999,(3):166~170.[Qu Xuanhui, Li Zhiling, Li Yiming, Qiu Guanghuan. Effect of MIM Processing on the MechanicalProperties of TungstenNickelIron Heavy Alloy[J]. Rare Metal Materials and Engineering,1999,(3):166~170.]
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