Design and development of a high-performance Ni-based superalloy WSU 150 for additive manufacturing

作     者：Praveen Sreeramagiri Ajay Bhagavatam Abhishek Ramakrishnan Husam Alrehaili Guru Prasad Dinda Praveen Sreeramagiri;Ajay Bhagavatam;Abhishek Ramakrishnan;Husam Alrehaili;Guru Prasad Dinda

作者机构：Department of Mechanical EngineeringWayne State UniversityDetroitMl48202USA 

基　　金：financial support from the U.S.Department of Energy and Advanced Powder Solutions(DESC0015743) 

出 版 物：《Journal of Materials Science & Technology》 (材料科学技术（英文版）)

年 卷 期：2020年第47卷第12期

页      码：20-28页

摘      要：This research proposes a design and development strategy of a new nickel-based superalloy for additive manufacturing.A new Ni-based superalloy has been developed by the application of the combinatorial alloy development technique coupled with CALPHAD based solidification modeling by effectively suppressing the precipitation *** suppression of precipitation during processing paved a way for prevention of cracks during *** new alloy "WSU 150" revealed excellent room temperature mechanical properties with a yield strength of 867 MPa,an ultimate tensile strength of 1188 MPa,and an elongation of 27.9% in the as-deposited *** mechanical properties of the heat-treated alloy were improved significantly to 1114 MPa yield strength,1396 MPa ultimate tensile strength,and an elongation of 16.1%.Improvement in the mechanical properties is attributed to the additional precipitation and coarsening of γ’ and carbides during *** investigation of the alloy revealed spherical γ’ with a rippled size distribution from the center to the interdendritic *** average size of the γ’ particles in the as-deposited condition was found to be around 48 nm in the interdendritic ***-treatment promoted the coarsening of γ’ which is explained in the paper.

主 题 词：Ni-based superalloys Additive manufacturing Laser metal deposition Ripple pattern microstructure Alloy development Mechanical properties 

学科分类：08[工学] 080502[080502] 0805[工学-能源动力学] 

核心收录：

D　O　I：10.1016/j.jmst.2020.01.041

馆 藏 号：203880984...