(北京理工大學(xué) 機(jī)電工程學(xué)院， 北京 100081)
摘 要: 通過實(shí)驗(yàn)分析了90W和93W鎢合金在動(dòng)加載時(shí)其斷裂機(jī)理及特性以及侵徹時(shí)其微觀結(jié)構(gòu)響應(yīng)的異同點(diǎn)。通過對(duì)比發(fā)現(xiàn)，二者的斷裂機(jī)理基本相似，但侵徹時(shí)，由于90W鎢合金中存在較多的粘結(jié)相而使得其蘑菇頭較小，其中的鎢顆粒變形也較小；只在93W鎢合金中發(fā)現(xiàn)了絕熱剪切現(xiàn)象的征候
關(guān)鍵字: 鎢合金； 動(dòng)態(tài)斷裂； 侵徹； 絕熱剪切
alloy under impact dynamics
（College of Electro-mechanical Engineering,
Beijing Insitute of Technolog,Beijing 100081, P.R.China）
Abstract:The difference of micro-behavior between 90W and 93W tungsten alloy under impact dynamics was analysed. Their fracture feature is alike. But when penetrating, because of more matrixes in 90W, the end of penetrator of 90W is smaller and its shape changing of W grains is also smaller. So, only in 93W, the adiabatic shearing bands can be found.
Key words: tungsten-alloy; dynamic fracture; penetration; adiabatic shearing
