本文選題：工業(yè)純鈦 + 高溫拉伸�。� 參考：《中國有色金屬學(xué)報(bào)》2015年06期

【摘要】：采用鍛態(tài)工業(yè)純鈦TA1標(biāo)準(zhǔn)拉伸試樣,利用Gleeble-1500D熱模擬試驗(yàn)機(jī)進(jìn)行高溫拉伸試驗(yàn),研究其高溫拉伸性能;并用SEM觀察并分析工業(yè)純鈦拉伸試樣斷口形貌及其形成機(jī)制。結(jié)果表明:隨溫度升高,工業(yè)純鈦的屈服強(qiáng)度和抗拉強(qiáng)度分別從最初的83.7和94.8 MPa減小到19.3和29.6 MPa;伸長率增大,在950和1000℃時(shí)分別達(dá)到峰值36.3%和28%。在882.5℃相變轉(zhuǎn)變溫度以下,純鈦表現(xiàn)為以微孔聚集型剪切斷裂為特征的韌性斷裂,隨溫度的升高,達(dá)到相變點(diǎn)882.5℃,純鈦發(fā)生同素異構(gòu)轉(zhuǎn)變,并伴隨著塑性提高,以準(zhǔn)解理方式斷裂。
[Abstract]:The tensile properties at high temperature were studied by means of Gleeble-1500D thermal simulation machine and the fracture morphology and formation mechanism of commercial pure titanium tensile specimens were observed and analyzed by SEM.The results show that the yield strength and tensile strength of commercial pure titanium decrease from 83.7 and 94.8 MPa to 19.3 and 29.6 MPA, respectively, and the elongation increases to 36.3% and 28.3% at 950C and 1000 鈩，

本文編號：1752922