發(fā)布時(shí)間：2018-02-25 08:02

  本文關(guān)鍵詞： W-Cu藥型罩 超細(xì)復(fù)合粉末 注射成型 組織和性能 混凝土侵徹　出處：《材料科學(xué)與工藝》2017年04期 　論文類(lèi)型：期刊論文

【摘要】：W-Cu合金結(jié)合了鎢的高密度與銅的高動(dòng)態(tài)延伸率,是一種前景廣闊的藥型罩材料.為獲得性能優(yōu)良的金屬射流,提高油氣井射孔彈的穿孔指標(biāo),對(duì)高致密均質(zhì)W-Cu合金藥型罩進(jìn)行了研發(fā).采用熱化學(xué)工藝開(kāi)發(fā)了不同含銅率(質(zhì)量分?jǐn)?shù)為10%,15%,20%,25%)的亞微米級(jí)超細(xì)W-Cu復(fù)合粉末,選W-25Cu型復(fù)合粉末并采用注射近凈成型工藝技術(shù)制備了藥型罩,將脫脂件在H_2氣氛中燒結(jié),峰值溫度為1 200℃.采用SEM觀察發(fā)現(xiàn),燒結(jié)藥型罩微觀結(jié)構(gòu)為亞微米級(jí)的W粒子均勻地分布在Cu基體中,其實(shí)測(cè)密度高達(dá)14.75 g/cm~3.拉伸試驗(yàn)表明,所開(kāi)發(fā)的藥型罩材料具有優(yōu)良的力學(xué)性能,極限抗拉強(qiáng)度達(dá)到822.4 MPa,屈服強(qiáng)度達(dá)807.5 MPa,延伸率為1.18%.破甲性能測(cè)試實(shí)驗(yàn)證明,該類(lèi)藥型罩具有極其穩(wěn)定的侵徹性能.
[Abstract]:W-Cu alloy, which combines the high density of tungsten with the high dynamic elongation of copper, is a kind of bulkhead material with broad prospect. The high density homogeneous W-Cu alloy powder was developed. The ultrafine W-Cu composite powder with different copper content (mass fraction 1015%) was developed by thermochemical process. W-25Cu composite powder was selected and the powder mask was prepared by injection near net molding technology. The defatted parts were sintered in H2 atmosphere at a peak temperature of 1 200 鈩，

本文編號(hào)：1533606