TC17鈦合金在熱變形過程中的組織演變規(guī)律
發(fā)布人：上海艾荔艾合金股份有限公司www.shailiai.cn
更新時(shí)間：2016-01-08
為了揭示變形程度和變形溫度對(duì)β預(yù)制坯針狀組織的影響規(guī)律，在800、820、840和860 ℃這4個(gè)不同溫度以及20%、40%、60%和80%這4個(gè)不同應(yīng)變量進(jìn)行小餅等溫壓縮試驗(yàn)。
TC17鈦合金在熱變形過程中的組織演變規(guī)律Microstructure evolvement regularity of TC17 titanium alloy in?hot deformation為了揭示變形程度和變形溫度對(duì)β預(yù)制坯針狀組織的影響規(guī)律，在800、820、840和860 ℃這4個(gè)不同溫度以及20%、40%、60%和80%這4個(gè)不同應(yīng)變量進(jìn)行小餅等溫壓縮試驗(yàn)。研究結(jié)果表明：變形程度是影響TC17鈦合金球化的主要因素。在變形量為40%~60%時(shí)，片狀α組織受到剪切作用并發(fā)生動(dòng)態(tài)再結(jié)晶；當(dāng)變形量大于60%時(shí)，組織發(fā)生有效球化。在800~860 ℃溫度范圍內(nèi)，變形溫度越高，越有利于組織球化。
In order to disclosure the influence of deformation temperature and deformation degree on β preforming acicular structure, small pie isothermal compressing test with different strain levels from 20% to 80% was carried out at four different temperatures ranging from 800 to 860 ℃. The results show that deformation degree is the key factor which influences the spheroidization of TC17 alloy. When the deformation rate is 40%?60%, lamellar structure of α phase is broken by the shear force and dynamic recrystallization takes place. When the deformation rate is higher than 60%, the spheroidization is effective. In the tempeature range of 800?860 ℃, the higher the temperature, the better the spheroidization.
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AILIAI has been a reliable partner and supplier of sophisticated and high-quality semi-finished products maed of alloys. In dialogue with our customers, we optimise our products to meet the specific application requirements. AILIAI develops the best alloy material solutions for current and future challenges.
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