公开(公告)号：US20140064982A1

公开(公告)日：2014-03-06

申请号：US13972517

申请日：2013-08-21

Applicant: Hitachi, Ltd.

Inventor： Takashi SHIBAYAMA ,  Shinya IMANO ,  Hironori KAMOSHIDA

IPC: F01D5/14 ,  C22C19/05

CPC classification number: F01D5/147 ,  C22C19/056 ,  C22F1/10 ,  F01D5/28

Abstract: An Ni base alloy uses GTD-111 as a base to improve high-temperature strength while maintaining the weldability and corrosion resistance and a gas turbine blade utilizes the Ni base alloy. The Ni base alloy contains Al of 2.5 to 3.5%, Co of 1.5 to 5.5%, Cr of 11.8 to 13.8%, Mo of 0.4 to 1.4%, Ta of 3.0 to 5.0%, Ti of 5.1 to 6.1%, W of 3.3 to 4.3%, B of 0.01 to 0.02%, C of 0.08 to 0.12% in mass % and remainder containing Ni and inevitable impurities and does not substantially contain Nb.

Abstract translation: Ni基合金使用GTD-111作为基体，以提高耐高温性，同时保持焊接性和耐腐蚀性，燃气轮机叶片利用Ni基合金。 Ni基合金的Al为2.5〜3.5％，Co为1.5〜5.5％，Cr为11.8〜13.8％，Mo为0.4〜1.4％，Ta为3.0〜5.0％，Ti为5.1〜6.1％，W为3.3 至4.3％，B为0.01〜0.02％，C为0.08〜0.12％质量％，余量为Ni和不可避免的杂质，基本不含Nb。

公开(公告)号：US20140064981A1

公开(公告)日：2014-03-06

申请号：US13971460

申请日：2013-08-20

Applicant: Hitachi, Ltd.

Inventor： Takashi SHIBAYAMA ,  Shinya IMANO ,  Hironori KAMOSHIDA ,  Hidetoshi KUROKI ,  Jun SATO

IPC: F01D5/14 ,  C22C19/05

CPC classification number: F01D5/147 ,  C22C19/055 ,  C22C19/056 ,  F01D5/02 ,  F01D5/066 ,  F01D5/28 ,  F05D2300/176 ,  Y02T50/671

Abstract: An Ni base forged alloy is easy to make hot forging and miniaturization of crystal grains while excellent high-temperature strength and segregation property are compatible. The Ni base forged alloy has solid solution temperature of a precipitation strengthening phase lower than or equal to 970° C., difference in the solid solution temperature between a δ-phase and the precipitation strength phase larger than or equal to 50° C., Al of 0.5 to 1.0%, Cr of 17 to 21%, Fe of 17 to 19%, Nb of 4.5 to 5.5%, Ti of 0.8 to 1.3%, W of 3.0 to 6.0%, B of 0.001 to 0.03%, C of 0.001 to 0.1% and Mo of 1.0% or less in mass percentage [%] and remainder made of Ni and inevitable impurities.

Abstract translation: 镍基锻造合金易于制造热锻和晶粒小型化，同时具有优异的高温强度和偏析性能。 Ni基锻造合金的析出强化相的固溶温度低于或等于970℃，δ相与析出强度相之间的固溶温度差大于或等于50℃， Al为0.5〜1.0％，Cr为17〜21％，Fe为17〜19％，Nb为4.5〜5.5％，Ti为0.8〜1.3％，W为3.0〜6.0％，B为0.001〜0.03％ 为0.001〜0.1％，Mo为1.0质量％以下，Mo为0.5质量％以下，余量为不可避免的杂质。

公开(公告)号：US20130160466A1

公开(公告)日：2013-06-27

申请号：US13722505

申请日：2012-12-20

Applicant: Hitachi, Ltd.

Inventor： Jun SATO ,  Shinya IMANO ,  Hiroyuki DOI ,  Takashi SHIBAYAMA

IPC: C22C19/05 ,  F02C7/00 ,  C22C30/00

CPC classification number: C22C19/056 ,  B21J1/003 ,  B21K1/28 ,  C22C19/055 ,  C22C30/00 ,  C22F1/10 ,  F02C7/00 ,  F05D2220/32

Abstract: It is an objective of the invention to provide an Ni-based forged alloy having good large ingot formability and good hot formability as well as high mechanical strength at high temperature. There is provided an Ni-based forged alloy comprising: 0.001 to 0.1 mass % of C; 0.001 to 0.01 mass % of B; 16 to 22 mass % of Cr; 0.5 to 1.5 mass % of Al; 0.1 to 6.0 mass % of W; 3.5 to 5.5 mass % of Nb; 0.8 to 3.0 mass % of Ti; 16 to 20 mass % of Fe; 2.0 mass % or less of Mo; and the balance including Ni and unavoidable impurities, in which: a segregation parameter Ps defined by a formula of “Ps (mass %)=1.05[Al concentration (mass %)]+0.6[Ti concentration (mass %)]−0.8[Nb concentration (mass %)]−0.3[Mo concentration (mass %)]” satisfies a relationship of “Ps≧−3.0 mass %”; and total amount of W and Mo is 1.75 atomic % or less.

Abstract translation: 本发明的目的是提供一种具有良好的铸锭成形性和良好的热成型性以及在高温下的高机械强度的Ni基锻造合金。 提供了一种Ni基锻造合金，其包含：0.001〜0.1质量％的C; 0.001〜0.01质量％ 16〜22质量％的Cr; 0.5〜1.5质量％的Al; 0.1〜6.0质量％的W; 3.5〜5.5质量％的Nb; 0.8〜3.0质量％的Ti; 16〜20质量％的Fe; 2.0质量％以下的Mo; 余量包括Ni和不可避免的杂质，其中：由“Ps（质量％）= 1.05 [Al浓度（质量％）] + 0.6 [Ti浓度（质量％）] -0.8]定义的分离参数Ps， Nb浓度（质量％）]〜0.3 [Mo浓度（质量％）]“满足”Ps“= -3.0质量％的关系。 W和Mo的总量为1.75原子％以下。