ZENG Xianghua
,
SHA Jiande
,
SU Ge Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
ChinaYUAN Jigang LIU Fumei ZHONG Huiwen Southwest Aluminium Mill
,
China National Nonferrous Metals Industry Corporation
,
Chongqing
,
China SHA Jiande
,
Engineer
,
Institute of Metal Research
,
Academia Sinica
,
Shenyang
,
China
金属学报(英文版)
The end grain attack of LDIOCS aluminium alloy plates during chemical milling in hot aqueous solution of sodium hydroxide has been studied.The results show that the microsegregation of some components,i.e.Cu,Si etc.,is the main reason of the end grain at- tack,and it is affected by the conditions of heat treatment as well.The end grain attack significantly diminishes while some technical measures which are beneficial to the reduce of segregation were taken during melting and casting.
关键词:
aluminium alloy
,
null
,
null
,
null
LIU Huanming The Steel Works No.2
,
Benxi Iron and Steel Company
,
Benxi
,
ChinaYANG Zupan TIAN Yanwen Northeast University of Technology
,
Shenyang
,
China LIU Huanming
,
Engineer
,
The Laboratory of Steel Works No.2
,
Benxi Iron and Steel Company
,
Benxi
,
Liaoning
,
China
金属学报(英文版)
The interaction coefficients of Ca.Ti and Mg in the dilute Sn-based solution have been de- termined at 1500℃.Experimental measurements were taken by equilibrating the slag-alloy systems with metallic Sn as flux and graphite as reducing agent under Ar atmosphere mixed with different portion of CO.It was found that a considerable error may produce if the coefficients of ε_(Ca)~(Ca),ε_(Mg)~(Mg)and ε_(Ti)~(Ti)in the molten Sn were neglected when the activities of the components CaO,MgO and TiO_2 in the slags were estimated by this method.
关键词:
Sn
,
null
,
null
,
null
