【摘要】 应用应力松驰法在Gleeble2000热力模拟机上研究了新型非调质油井管用钢33Mn2V在600-950℃内含钒碳氮化物的应变诱导析出行为。结果表明:该钢PTT曲线具有双“C”型特征,碳氮化物析出孕育期最短的温度分别约为850℃和600℃;析出相形貌主要为方形和圆角方形,其中方形颗粒是均热过程中未溶解的TiN,圆角方形颗粒是由钒、碳、氯原子以TiN为基底外延生长析出形成的TixV1-xCyN1-y。更多还原

【Abstract】 The strain induced precipitation behavior of steel 33Mn2V for oil well tubes in austenite region in the range of 600 -950℃was investigated by the stress relaxation method using Gleeble2000 thermal-mechanical simulator. The results show that the shape of precipitation-temperature-time (PTT) is a "double C" curve; the "nose" temperatures of the precipitation curve are about 850℃and 650℃, respectively. Two types of precipitates in austenite, cubic and oblong ovate, were observed. The cubic particles are mostly TiN undissoved during reheating, while the oblong ovate precipitates are complex TixV1-x CyN1-y formed by V, C and N epitaxially growing on the substrate of TiN particle.更多还原