A.強(qiáng)度提高、塑性降低; B.降低、塑性提高; C.強(qiáng)度、塑性都提高; D.強(qiáng)度、塑性都降低。
A.產(chǎn)生2%的塑性應(yīng)變所對(duì)應(yīng)的應(yīng)力值作為屈服極限; B.產(chǎn)生0.02%的塑性應(yīng)變所對(duì)應(yīng)的應(yīng)力值作為屈服極限; C.產(chǎn)生0.2%的塑性應(yīng)變所對(duì)應(yīng)的應(yīng)力值作為屈服極限; D.產(chǎn)生0.2%的應(yīng)變所對(duì)應(yīng)的應(yīng)力值作為屈服極限。
A.橫截面; B.縱截面; C.tmax所在面; D.smax所在面。