INTERFACIAL EMBRITTLEMENT IN LIQUID-PHASE SINTERED TUNGSTEN HEAVY ALLOYS

被引：116

作者：

EDMONDS, DV ^{[1
]}

JONES, PN ^{[1
]}

机构：

[1] MINIST DEF,ROYAL ARMAMENT RES & DEV ESTAB,SEVENOAKS TN14 7BP,ENGLAND

来源：

METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE | 1979年 / 10卷 / 03期

关键词：

D O I：

10.1007/BF02658336

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The variations in toughness of the liquid-phase sintered heavy alloys W-Ni-Fe and W-Ni-Cu have been examined. Toughness was found to be controlled primarily by the strength of the tungsten particle-matrix interfaces, which is sensitive to the rate of cooling from the sintering temperature. Furnace-cooling led to the embrittlement of these interfaces; in the case of W-Ni-Fe transmission electron microscopy identified interfacial precipitation of a W(NiFe) intermetallic compound, and in W-Ni-Cu Auger electron spectroscopy indicated interfacial segregation of the trace elements phosphorus and sulfur. This embrittlement was effectively reduced by solution treating beneath the sintering temperature and quenching © 1979 American Society for Metals and the Metallurgical Society of AIME.

引用

页码：289 / 295

页数：7