MICROSTRUCTURE AND MECHANICAL-PROPERTIES OF MULTIPHASE NIAL-BASED ALLOYS

被引：49

作者：

PANK, DR

NATHAL, MV

KOSS, DA

机构：

[1] PENN STATE UNIV,DEPT MAT SCI & ENGN,UNIVERSITY PK,PA 16802

[2] NASA,LEWIS RES CTR,CLEVELAND,OH 44135

来源：

JOURNAL OF MATERIALS RESEARCH | 1990年 / 5卷 / 05期

关键词：

Heat Treatment--Annealing - Nickel Aluminum Cobalt Alloys--Mechanical Properties - Nickel Aluminum Cobalt Hafnium Alloys--Mechanical Properties - Nickel Metallography--Microstructures - Powder Metallurgy--Nickel Aluminum Cobalt;

D O I：

10.1557/JMR.1990.0942

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effect of the y’ phase on the deformation behavior fracture resistance of melt-spun ribbons and consolidated bulk specimens of a series of NiAl-based alloys with Co and Hf additions has been examined. The morphology, location, and volume fraction of the y’ phase are significant factors in enhancing the fracture resistance of the normally brittle NiAl-based alloys. In particular, the results indicate that a continuous grain boundary film of y’ can impart limited room temperature ductility regardless of whether B2 or Ll0 NiAl is present. Guidelines for microstructure control in multi-phase NiAl-based alloys are also presented. © 1990, Materials Research Society. All rights reserved.

引用

页码：942 / 949

页数：8