Fracture Characteristics of Forged Plate of Ti-4.5Al-3V-2Mo-2Fe Conducted with Single and Duplex Annealing in α+β Field

机译：α+β场单双退火退火Ti-4.5Al-3V-2Mo-2Fe锻造板的断裂特性

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Fracture characteristics of forged plate of Ti-4.5Al-3V-2Mo-2Fe, a β-rich α+β type titanium alloy registered in AMS no. 4899-4964, conducted with single and duplex-annealing treatments in α+β field are investigated. Tensile strength of the alloy increases with increasing annealing temperature from 1103 K to 1123 K, and then decreases slightly up to 1173 K for both kinds of the heat treatments. The tensile strength of longitudinal direction and short direction is slightly different. The fracture toughness, J_(IC), decreases with the increase of annealing temperature from 1023 K to 1123 K and increases with further increasing temperature up to 1173 K. The fracture toughness of longitudinal direction is much greater than that of short direction. Fracture surface morphologies show dimples, a typical ductile fracture. The specimen containing coarser acicular α in β phase tends to have longer crack path indicating that the crack deflection is more effective in the alloy containing a coarse secondary phase.

机译：Ti-4.5Al-3V-2Mo-2Fe（一种富含β的α+β型钛合金）在AMS No. 2中登记的锻造板的断裂特性。研究了在α+β场中采用单退火和双退火处理进行的4899-4964。合金的拉伸强度随着退火温度从1103 K到1123 K的增加而增加，然后在两种热处理中略有降低，直到1173K。纵向和短边方向的拉伸强度略有不同。断裂韧性J_（IC）随着退火温度从1023 K增加到1123 K而降低，并且随着温度进一步升高直至1173 K而增加。纵向的断裂韧性远大于短方向的断裂韧性。断裂表面形态显示为酒窝，是典型的韧性断裂。 β相中含有较粗的针状α的试样倾向于具有较长的裂纹路径，这表明在含有较粗的第二相的合金中，裂纹偏转更有效。

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《World Conference on Titanium v.3; 20030713-20030718; Hamburg; DE》|2003年|P.1615-1622|共8页
会议地点 Hamburg(DE);Hamburg(DE)
作者
Gunawarman; M. Niinomi; D. Eylon; S. Fujishiro; C. Ouchi;
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Andalas University, Padang, Indonesia;

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正文语种 eng
中图分类钛;
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4. Fracture Characteristics of Forged Plate of Ti-4.5Al-3V-2Mo-2Fe Conducted with Single and Duplex Annealing in α+β Field [C] . Gunawarman, M. Niinomi, D. Eylon, World conference on titanium . 2004

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Fracture Characteristics of Forged Plate of Ti-4.5Al-3V-2Mo-2Fe Conducted with Single and Duplex Annealing in α+β Field

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