Answer
An zaɓi A286 (superalloy-base superalloy) don maɓuɓɓugan ruwa masu aiki tsakanin $700^{\circ}F$ da $1000 ^{\circ}F$ saboda jurewar shakatawar damuwa. Damuwa shakatawa shine raguwar dogaro da lokaci a cikin kaya a ƙarƙashin juzu'i na yau da kullun, da farko yana motsawa ta hanyar rarrabuwar kawuna da zamewar iyakar hatsi. Don A286, hazo na $\gamma'$ ($ Ni_3Ti$) barbashi yayin tsarin tsufa ($ 1325 ^{\circ}F$ na awanni 16) yana haifar da ɓarna, yana rage yawan shakatawa. Idan an ƙera maɓuɓɓugar ruwa don ɗaukar nauyin $100$lb, fallasa zuwa $900^{\circ}F$ na awa 1000 na iya haifar da asarar 5-10% a cikin kaya. Dole ne injiniyoyi su zana nauyin farko ta amfani da ma'aunin Arrhenius don hasashen nauyin 'ƙarshen rayuwa', tabbatar da cewa tsarin ya ci gaba da aiki duk da asarar ƙarfin bazara a kan lokaci.
