① α合金含一定量的稳定α相的元素，平衡状态下主要由α相组成。α合金比重小，热强性好、具有良好的焊接性和优异的耐蚀性,缺点是室温强度低,通常用作耐热材料和耐蚀材料。α合金通常又可分为全α合金(TA7)、近α合金 (Ti-8Al-1Mo-1V)和有少量化合物的α合金(Ti-2.5Cu)。 ② (α+β)合金含一定量的稳定α相和β相的元素，平衡状态下合金的组织为α相和β相。(α+β)合金有中等强度、并可热处理强化，但焊接性能较差。(α+ β)合金应用广泛,其中Ti-6Al-4V合金的产量在全部钛材中占一半以上。
③ β合金含大量稳定β相的元素，可将高温β相全部保留到室温。β合金通常又可分为可热处理β合金(亚稳定β合金和近亚稳定β合金)和热稳定β合金。可热处理 β合金在淬火状态下有优异的塑性，并能通过时效处理使抗拉强度达到130～140kgf/mm2。β合金通常作高强度高韧性材料使用。缺点是比重大，成本高，焊接性能差，切削加工困难。
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[ DB ] CONNECT:[ UseTime:0.001383s ] mysql:host=pc-m5epcw1px949b110u.rwlb.rds.aliyuncs.com;port=3306;dbname=yousedb;charset=utf8
[ SQL ] SHOW COLUMNS FROM `tb_para` [ RunTime:0.009628s ]
[ SQL ] SELECT * FROM `tb_para` WHERE `id` = 1 LIMIT 1 [ RunTime:0.001361s ]
[ SQL ] SHOW COLUMNS FROM `tb_prod` [ RunTime:0.001281s ]
[ SQL ] UPDATE `tb_prod` SET `hit`=`hit`+1 WHERE `id` = 149424 [ RunTime:0.001179s ]
[ SQL ] SELECT * FROM `tb_prod` WHERE `id` = 149424 LIMIT 1 [ RunTime:0.014264s ]
[ SQL ] SHOW COLUMNS FROM `tb_category` [ RunTime:0.001254s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `id` = 204 LIMIT 1 [ RunTime:0.001024s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `id` = 199 LIMIT 1 [ RunTime:0.000899s ]
[ SQL ] SHOW COLUMNS FROM `tb_area` [ RunTime:0.001521s ]
[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 289 LIMIT 1 [ RunTime:0.000907s ]
[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 24 LIMIT 1 [ RunTime:0.000878s ]
[ SQL ] SHOW COLUMNS FROM `tb_anchor` [ RunTime:0.001056s ]
[ SQL ] SELECT * FROM `tb_anchor` ORDER BY `id` ASC [ RunTime:0.007860s ]
[ SQL ] SELECT `id`,`title` FROM `tb_prod` WHERE `id` > 149424 AND `check_status` = 1 AND `category_id` = 204 ORDER BY `submit_date` ASC LIMIT 1 [ RunTime:0.002369s ]
[ SQL ] SELECT `id`,`title` FROM `tb_prod` WHERE `id` < 149424 AND `check_status` = 1 AND `category_id` = 204 ORDER BY `submit_date` DESC LIMIT 1 [ RunTime:0.006934s ]
[ SQL ] select id,title,city_id,pic,add_mode,cert_mode from tb_prod where id<>149424 and check_status=1 and ( title like '%钛棒%' or tag like '%钛棒%' or intro like '%钛棒%' or title like '%钛合金%' or tag like '%钛合金%' or intro like '%钛合金%' ) order by submit_date desc limit 10 [ RunTime:0.004391s ]
[ SQL ] select id,title,city_id from tb_need where check_status=1 and ( title like '%钛棒%' or tag like '%钛棒%' or intro like '%钛棒%' or title like '%钛合金%' or tag like '%钛合金%' or intro like '%钛合金%' ) order by submit_date desc limit 10 [ RunTime:0.006386s ]
[ SQL ] select id,title from tb_news where check_status=1 and category_id=45 and ( title like '%钛棒%' or tag like '%钛棒%' or intro like '%钛棒%' or title like '%钛合金%' or tag like '%钛合金%' or intro like '%钛合金%' ) order by submit_date desc limit 10 [ RunTime:0.029822s ]
[ SQL ] SHOW COLUMNS FROM `tb_mcc` [ RunTime:0.018520s ]
[ SQL ] SELECT * FROM `tb_mcc` WHERE `classify` = 1 [ RunTime:0.000956s ]
[ SQL ] SELECT * FROM `tb_mcc` WHERE `classify` = 2 [ RunTime:0.000904s ]
[ SQL ] SHOW COLUMNS FROM `tb_collect` [ RunTime:0.012997s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_collect` WHERE `table_name` = 'prod' AND `table_id` = 150944 LIMIT 1 [ RunTime:0.001117s ]
[ SQL ] SHOW COLUMNS FROM `tb_comment` [ RunTime:0.001073s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 150944 AND `parent_id` = 0 LIMIT 1 [ RunTime:0.000891s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_collect` WHERE `table_name` = 'prod' AND `table_id` = 150943 LIMIT 1 [ RunTime:0.000964s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 150943 AND `parent_id` = 0 LIMIT 1 [ RunTime:0.000861s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_collect` WHERE `table_name` = 'prod' AND `table_id` = 150942 LIMIT 1 [ RunTime:0.001225s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 150942 AND `parent_id` = 0 LIMIT 1 [ RunTime:0.000961s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_collect` WHERE `table_name` = 'prod' AND `table_id` = 150941 LIMIT 1 [ RunTime:0.000970s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 150941 AND `parent_id` = 0 LIMIT 1 [ RunTime:0.000999s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_collect` WHERE `table_name` = 'prod' AND `table_id` = 150940 LIMIT 1 [ RunTime:0.000972s ]
[ SQL ] SELECT COUNT(*) AS tp_count FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 150940 AND `parent_id` = 0 LIMIT 1 [ RunTime:0.000893s ]
[ SQL ] SHOW COLUMNS FROM `tb_user_company` [ RunTime:0.001302s ]
[ SQL ] SELECT * FROM `tb_user_company` WHERE `check_status` = 1 ORDER BY `islist` DESC,`list_date` DESC LIMIT 0,10 [ RunTime:0.002174s ]
[ SQL ] SELECT * FROM `tb_comment` WHERE `table_name` = 'prod' AND `table_id` = 149424 AND `parent_id` = 0 AND `isdelete` = 0 ORDER BY `add_date` DESC [ RunTime:0.001053s ]
[ SQL ] SELECT * FROM `tb_user_company` WHERE `user_id` = 6 LIMIT 1 [ RunTime:0.000955s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `pid` = 36 ORDER BY `sortid` ASC [ RunTime:0.001006s ]
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[ SQL ] SELECT * FROM `tb_category` WHERE `pid` = 38 ORDER BY `sortid` ASC [ RunTime:0.001138s ]
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[ SQL ] SELECT * FROM `tb_category` WHERE `pid` = 40 ORDER BY `sortid` ASC [ RunTime:0.001192s ]
[ SQL ] SELECT * FROM `tb_category` WHERE `pid` = 41 ORDER BY `sortid` ASC [ RunTime:0.000932s ]
[ SQL ] SHOW COLUMNS FROM `tb_advert` [ RunTime:0.001157s ]
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[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 289 LIMIT 1 [ RunTime:0.000832s ]
[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 24 LIMIT 1 [ RunTime:0.004538s ]
[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 160 LIMIT 1 [ RunTime:0.000857s ]
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[ SQL ] SELECT * FROM `tb_area` WHERE `id` = 160 LIMIT 1 [ RunTime:0.000839s ]
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[ SQL ] SELECT * FROM `tb_advert` WHERE `id` = 46 LIMIT 1 [ RunTime:0.001058s ]
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