Effects of processing routes on room temperature tensile strength and elongation for Inconel 718
Effects of processing routes on room temperature tensile strength and elongation for Inconel 718
复制标题
DOI：
10.1016/j.matdes.2017.01.069
复制
发表时间：
2017-04-05
影响因子：
8.4
通讯作者：
Kuo, Shih-Ming
中科院分区：
文献类型：
--
作者：
Chen, Yung-Ta;Yeh, An-Chou;Kuo, Shih-Ming
对于石油和天然气工业应用，要求深井下钻井部件的材料在室温下具有超过1400 MPa的拉伸强度。本研究表明，Inconel 718的工艺设计可以拓宽其力学性能谱，以满足超高室温拉伸强度的要求。在这项研究中实现的室温拉伸性能的范围包括在光谱的一端1785 MPa的拉伸强度，和在另一端超过40%的大拉伸应变。此外，通过直接时效工艺最小化预时效8析出物的形成，可以实现1430 MPa和18%拉伸应变的良好平衡的拉伸性能。并对强化机制及强度与塑性的平衡进行了探讨。(C)2017爱思唯尔有限公司版权所有
For oil and gas industrial applications, materials of deep downhole drilling components are required to possess tensile strength over 1400 MPa at room temperature. The present study demonstrates that processing design for Inconel 718 can widen the spectrum of its mechanical properties to meet the demand for ultra-high room temperature tensile strength. The range of room temperature tensile properties achieved in this study include tensile strength of 1785 MPa in one end of spectrum, and large tensile strain over 40% in the other end. Furthermore, a well-balanced tensile property of 1430 MPa with 18% tensile strain can be achieved by minimizing the formation of pre-aging 8 precipitates through direct aging process. The strengthening mechanisms and the trade-off between tensile strength and ductility have been investigated and discussed. (C) 2017 Elsevier Ltd. All rights reserved.