中国有色金属学报（英文版）
中國有色金屬學報（英文版）
중국유색금속학보（영문판）
TRANSACTIONS OF NONFERROUS METALS SOCIETY OF CHINA
2011年
6期
1291-1296
,共6页
预应变%显微组织演变%高温合金%CMSX-4
預應變%顯微組織縯變%高溫閤金%CMSX-4
예응변%현미조직연변%고온합금%CMSX-4
pre-strain%microstructural evolution%superalloy%CMSX-4
在室温下,对经完全热处理的第二代单晶高温合金CMSX-4实施压缩和拉伸预应变.压缩和拉伸预应变在单晶CMSX-4中产生了剪切带.单晶CMSX-4在950℃下热暴露10h,沿剪切带产生了γ'粒子择优粗化.剪切带上的γ'粒子逐渐侵入γ通道.最后,γ通道沿着剪切带消失.TCP状粒子伴随着γ通道的消失而出现.然而,热暴露10 h的普通单晶CMSX-4没有产生TCP沉淀,也没有γ'粒子择优粗化.热暴露100 h的预应变CMSX-4沿剪切带产生了γ'粒子和TCP相粒子择优粗化,基体中也有γ'粒子粗化.
在室溫下,對經完全熱處理的第二代單晶高溫閤金CMSX-4實施壓縮和拉伸預應變.壓縮和拉伸預應變在單晶CMSX-4中產生瞭剪切帶.單晶CMSX-4在950℃下熱暴露10h,沿剪切帶產生瞭γ'粒子擇優粗化.剪切帶上的γ'粒子逐漸侵入γ通道.最後,γ通道沿著剪切帶消失.TCP狀粒子伴隨著γ通道的消失而齣現.然而,熱暴露10 h的普通單晶CMSX-4沒有產生TCP沉澱,也沒有γ'粒子擇優粗化.熱暴露100 h的預應變CMSX-4沿剪切帶產生瞭γ'粒子和TCP相粒子擇優粗化,基體中也有γ'粒子粗化.
재실온하,대경완전열처리적제이대단정고온합금CMSX-4실시압축화랍신예응변.압축화랍신예응변재단정CMSX-4중산생료전절대.단정CMSX-4재950℃하열폭로10h,연전절대산생료γ'입자택우조화.전절대상적γ'입자축점침입γ통도.최후,γ통도연착전절대소실.TCP상입자반수착γ통도적소실이출현.연이,열폭로10 h적보통단정CMSX-4몰유산생TCP침정,야몰유γ'입자택우조화.열폭로100 h적예응변CMSX-4연전절대산생료γ'입자화TCP상입자택우조화,기체중야유γ'입자조화.
Compressive and tensile pre-strains at room temperature were induced in the second generation single crystal superalloy CMSX-4 fully heat treated.Both compressive and tensile pre-strain generated shear bands in the single crystal CMSX-4.Thermal exposure for 10 h at 950 ℃ on the pre-strained single crystal CMSX-4 developed preferential coarsening of γ' particles along the shear bands.γ' particles on the shear band gradually invaded γ channel.Finally,the γ channels along the shear band disappeared.TCP-like particles appeared at the expense of γ channel disappearance.However,thermal exposure for 10 h of the normal single crystal CMSX-4 did not develop TCP precipitation or preferential coarsening of γ' particles.Thermal exposure for 100 h of pre-strained CMSX-4 developed preferential coarsening of γ' and TCP phase particles along the shear bands as well as coarsening of γ' particles in the matrix.
