【摘要】：利用XRD、SEM和TEM等手段分析了TC16鈦合金輥模拉絲變形過程中的相組成和顯微組織的變化情況,并對不同應變的輥模拉絲變形絲材進行了室溫拉伸性能與顯微硬度測試。結果表明,在輥模拉絲變形過程中,TC16鈦合金絲材主要由α相和β相組成,部分β相發(fā)生應力誘發(fā)α''馬氏體相變;隨著輥模拉絲真應變的增加,TC16鈦合金絲材的顯微組織明顯細化,當真應變達到2.14時,橫截面和縱截面中的α相和β相纖維狀組織厚度均約為0.3 mm,兩相衍射斑點已經(jīng)近似環(huán)狀,表明兩相顯微組織也明顯細化;隨著輥模拉絲真應變的增加,TC16鈦合金絲材的抗拉強度和顯微硬度大幅提高,當真應變達到2.14時,TC16鈦合金絲材的顯微硬度由初始的266 HV提高到365 HV。
[Abstract]:By means of XRD,SEM and TEM, the changes of phase composition and microstructure of TC16 titanium alloy roller die during wire drawing process were analyzed, and the tensile properties and microhardness of different strain roll die drawing deformed wires were tested at room temperature. The results show that the TC16 titanium alloy wire is mainly composed of 偽 phase and 尾 phase during the process of roll die wire drawing, and some 尾 phase occurs stress induced 偽 'martensitic transformation. With the increase of true strain of roll die drawing wire, the microstructure of TC16 titanium alloy wire was refined obviously. When the true strain reached 2.14, the thickness of 偽 phase and 尾 phase in cross section and longitudinal section were about 0.3 mm,. The diffraction spots of two phases have been similar to the ring shape, indicating that the microstructure of the two phases is also obviously refined. The tensile strength and microhardness of TC16 titanium alloy wire increased greatly with the increase of true strain of roller die drawing wire. When the true strain reached 2.14, the microhardness of TC16 titanium alloy wire increased from 266 HV to 365 HV..
【作者單位】： 中國科學院金屬研究所;
【基金】：遼寧省博士科研啟動基金項目No.20141143~~
【分類號】：TG146.23;TG359

【相似文獻】

相關期刊論文 前2條

1 王勉;王自勤;;Tc16螺栓頭下圓角滾壓工藝參數(shù)與疲勞強度研究[J];貴州工業(yè)大學學報(自然科學版);2008年05期

2 ;[J];;年期

相關碩士學位論文 前1條

1 王勉;Tc16螺栓頭下圓角滾壓工藝與疲勞強度研究[D];貴州大學;2009年

，

本文編號：2340247