EFFECTS OF ALLOYING ELEMENTS ON CREEP PROPERTIES OF 9Cr-1Mo TYPE STEELS: (STUDY ON DEVELOPMENT OF 9Cr-1Mo TYPE STEELS - 2).

被引：0
|
作者：
Tokuno, K. [1 ]
Hashimoto, K. [1 ]
Takeda, T. [1 ]
Yamaba, R. [1 ]
Gokyu, H. [1 ]
机构：
[1] Nippon Steel Corp, Sagamihara, Jpn, Nippon Steel Corp, Sagamihara, Jpn
来源：
Transactions of the Iron and Steel Institute of Japan | 1987年 / 27卷 / 07期
关键词：
IRON AND STEEL METALLOGRAPHY - Microstructures - STEEL - Additives - STEEL HEAT TREATMENT - Annealing;
D O I：
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摘要：
This paper describes the results of investigation on the effects of the amounts of C, Si and N on creep properties of the ASTM A387-91 steel (ORNL-type Mod. 9Cr-1Mo steels). The creep ductilities of nearly all the specimens exceeded the lower limit value 75% of reduction of area of ruptured specimens which is recommended in the ORNL report. The results obtained in this report, together with those of microstructure observation and low-speed high-temperature tensile tests, can be rationally explained from the stand-points of precipitation and solution hardening.
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