|
|
EFFECT OF Na AND K IMPURITIES AND Ce MODIFICATION ON CRACK PROPAGATION RESISTANCE FOR ALLOY 8090 |
MENG Liang;ZHANG Baochang;LIANG Ying;ZHANG Weizhong;TIAN Puke Northwestern Polytechnical University; Xi'an |
|
Cite this article:
MENG Liang;ZHANG Baochang;LIANG Ying;ZHANG Weizhong;TIAN Puke Northwestern Polytechnical University; Xi'an. EFFECT OF Na AND K IMPURITIES AND Ce MODIFICATION ON CRACK PROPAGATION RESISTANCE FOR ALLOY 8090. Acta Metall Sin, 1992, 28(3): 27-31.
|
Abstract The crack propagation resistance for alloy 8090 sheet decreases with the increaseof content of Na and K impurities. An improvement over the fracture toughness and crack initi-ation resistance for the alloy containing Na and K within certain limit may be made by adding0.05% Ce. This beneficial modification would not be manifested if the alloy contained moreenough Na and K. One of the reasons why Na and K injure the toughness of the alloy might bedue to that they cause the precipitation of T_1 phase along grain and subgrain boundaries andaccelerate the abnormal growth of recrystallized grains.
|
Received: 18 March 1992
|
1 Webster D. Met Prog, 1984; 125(5) : 33 2 Webster D. Metall Trans, 1987; 18A: 2181 3 Webster D. In: Sanders T H Jr., Starke E A, Jr., eds., Aluminum-Lithium Alloys, Proc 5th Int Aluminum-Lithium Conf, Williamsburg, Virginia, 27--31 March, 1989, Birmingham (UK): Materials and Component Engineering Publications Ltd., 1989: 519 4 Zhang B C, Wang Z Z, Zhu W B, Li Y H, Liang Y. In: Sanders T H Jr., Starke E A Jr., eds., Aluminum-Lithium Alloys, Proc 5th Int Aluminum-Lithium Conf, Williamsburg, Virginia, 27--31 March, 1989, Birmingham (UK): Materials and Component Engineering Publications Ltd., 1989: 529 5 张匀,赵洪恩,姚大平,高国忠,陈继志,胡壮麒.航空新材料工程论文集,Vol.Ⅰ,北京,1990:129T |
No Suggested Reading articles found! |
|
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
Cited |
|
|
|
|
|
Shared |
|
|
|
|
|
Discussed |
|
|
|
|