时效工艺对AerMet100钢强韧性能的影响

发布时间：2018-07-28 09:05

【摘要】：采用正常时效、预时效+正常时效、双时效等多种时效工艺对热锻后的Aer Met100钢进行热处理,研究时效工艺对Aer Met100钢回火组织及力学性能的影响。结果表明:正常时效处理后Aer Met100钢的抗拉强度较高(1978 MPa),但是冲击韧性较低(冲击功74J);双时效处理后冲击韧性较高(冲击功102J),但是抗拉强度较低(1662 MPa);经过预时效+正常时效(510℃×30 min,+482℃×5 h)处理得到优良的强韧性能,其抗拉强度为1946 MPa,冲击功为104 J。强韧性提高的原因是:510℃预时效促进了C原子扩散,提高了膜状逆转奥氏体含量及其稳定性,有利于韧性的改善;同时,预时效保温时间短(≤30 min),析出相M2C未与基体脱离共格关系,析出的强化作用提高了强度。
[Abstract]:The effect of aging process on the tempering microstructure and mechanical properties of Aer Met100 steel after hot forging was studied by using various aging processes such as normal aging, preaging normal aging, double aging and so on. The results show that the tensile strength of Aer Met100 steel after normal aging treatment is higher (1978 MPa), but the impact toughness is lower (74J), and the impact toughness is higher (102J) after double aging treatment, but the tensile strength is lower (1662 MPa); after pre-aging). After normal aging (510 鈩，

本文编号：2149597